Version history

This page contains all changes to Kerbal Space Program since v0.7.3, the initial public release.

→ See also: Planned features

v0.18.0

Released 1^st December, 2012

Incomplete List of Major Changes:

• Docking
• Flight Planning
• Action Groups
• New Resources System
• Music
• Performance Tweaks
• Added New planet and moon
• Old base on island
• Added electricity (Spaceships have got limited electricity and you can restore electricity with solar panels)
• Added functional scientific devices
• Added the fourth indicator "no fuel" route on the space map
• Added rename ship and change its symbol
• New textures for ship's parts* New kerbal terrain (you can see rivers, islands, deserts, ...)

v0.17.1

Released 30^th Oct, 2012

New:

• New option on the settings file to enable verbose debug logging, to include a call stack trace (when available)
• Added a slider in Game Settings to allow adjusting the UI size.
• Added Main Menu and Credits music.
• The Q and E keys can now be used to control yaw with the EVA Jetpack
• The flight UI now scales dynamically depending on screen resolution, to always have the same pixel size.

Bug Fixes and Tweaks:

• Fixed an issue where the menu ambience music would sometimes start playing on other scenes after some time had elapsed.
• Overhauled the Debug Console. Entries are now labeled and colored according to type and the text is selectable.
• Fixed the crewmember name textfields on the flight UI not scaling font size properly.
• Fixed the terrain collision detection issues for Gilly and Bop.
• Tweaked the terrain preset settings and PQS subvision methods for a significant reduction in object count.
• PQS terrain quads are now positioned as closely as possible to their vertices, for maximum mesh stability.
• Added a game setting to disable the automatic orientation when pressing any of the WSAD keys while jetpacking on EVA.
• Fixed an issue with the terrain engine that resulted in invisible oceans.
• Fixed a small bug on the patched conics maths that could have caused some trouble.
• Fixed the misaligned Music and Voice Volume sliders on the Audio Settings Screen.
• Added a Render Quality slider to the video settings screen.
• Fixed an issue where ships could break apart when changing warp rates too quickly (the "Space Cthulhu" bug)
• Fixed an issue with the VAB/SPH UI, that made it possible to launch without a ship, causing a total game crash.
• Removed an unused asset from the tracking station scene, which was taking up memory without adding anything.
• Fixed a problem that could cause parachutes to despawn when travelling at high speeds.

v0.17

Released 19^th Sept, 2012

New:

• Internal Cockpit Views: The first iteration of the IVAs (Intra-Vehicular Activities) feature set.
• Multiple Player Saves: You can now have multiple ongoing game sessions, as each save is kept in its own folder (instead of all using the saves/default one).
• Quick Flight Scenarios: Start flights from pre-set conditions, without interfering with your persistent sandbox save, and also save your own scenarios from your main game.
• Scenario Logic Modules: Like PartModules, but for scene logic (and defined on an SFS file instead of a part.cfg).
• Training Scenarios: Hands-On tutorials to teach you everything from craft construction to orbital maneuvers.
• Center of mass, thrust, lift and drag visual cues on the construction scenes.
• Prebuilt ships included with the game, as examples and possible starting points.
• Many new planets and moons throughout the Kerbal Solar System.
• Physical Timewarp Modes: An alternate time-warp mode where you can accelerate time to 2x, 3x and 4x without putting the sim on rails.
• Several new parts
• Added new tree and boulder meshes for Kerbin (No more paper cutout trees)
• Pressing backspace will now reset the map and internal view.
• Middle mouse modifies the internal camera zoom by an additional 2x.
• Double clicking middle mouse will reset the internal camera zoom.
• Unlit/Transparent shader added to mu reader/writer.
• Added Nuclear-Thermal Engine part
• Added focusable areas for internal views
• Added Settings for Music and Voice Volume
• Double-tapping the wheel brakes key will now set parking brakes.

Bug Fixes and Tweaks:

• Fixed an issue with numerical inaccuracy at very high velocities (the "Space Kraken" bug).
• Fixed several issues with the fuel flow logic.
• Tweaked the atmosphere rendering for Kerbin, for improved visuals.
• Ships saved by one player are private to that player. Ships on the KSP/Ships folders are common to all players and non-overwritable (from inside the game)
• Added a button on game loading dialog, to delete a saved game and all its contents (prompts for confirmation).
• Added a button on the ship loading dialog to delete saved ships (prompts for confirmation).
• Added a button on the Tracking Station to terminate an ongong flight (prompts for confirmation).
• Implemented dynamic walk cycle blending for EVA Kerbals under G levels between 0.17 and 1G
• Added a floating origin system to the Scaled Space subscene, eliminating the visual jittering when viewing distant objects in the map view.
• Revised part titles and descriptions for the parts added in 0.16
• Fixed an issue with the terrain altitude detection, which could cause vessels (mostly debris) to fall through terrain.
• Fixed an issue where flying through a Mun arch would destroy the vessel.
• Fixed an issue with the G force calculation for vessels, which could prevent saving or warping.
• Fixed several issues with the orbit math while on solar escape trajectories.
• Fixed an issue with Krakensbane that could cause sub-optimal Kraken-banishment.
• Smoke trails are now properly updated in moving reference frames.
• Added smoothing to altimeter.
• Fixed an issue with part initialization order which could cause a lot of trouble with physics and joints.
• Fixed a bug with crossing SOIs at 1x warp.
• Found and worked around a unity bug which caused several issues with parts colliding within the same vessel, and getting twitched out of place.
• Fixed issues with the landing gear (will still need a rewrite, but should be better now)
• Fix for advanced canard inversion of movement.
• The Map Camera no longer rotates when in a rotating reference frame.
• The ship cache is now properly cleared when starting a new game.
• The Simulate In Background setting no longer requires a game restart to take effect.
• The orbit trajectory reframing maths are all done with double-precision now, to remove jitter from the orbit splines.
• Fuel tank parts no longer look into parent parts for fuel, unless connected to them by a fuel line.
• Rewrote the LandingGear part as a PartModule, for a much more robust and stable implementation.
• Tweaked the friction values for the landing gear wheels
• Fixed an issue in Vessel that could cause a stream of nullref errors
• Fixed an issue with Vessels not properly updating the positions of physicsless parts.

v0.16

Released 20^th July, 2012

New:

• Kerbal crewmembers in Extra-Vehicular Activities, both at the surface and in orbit.
• Kerbal scientists, mechanics and ground crew all around the Space Center Facilities.
• New Internal Cockpit models, with full modding support.
• New (Much lighter on performance) Particle Effects and Explosions
• Several new, larger rocket parts.
• Added a Launch Clamp part. It holds the ship in place at the pad so it doesn't crumble to pieces before you get a chance to launch.

Bug Fixes and Tweaks:

• Set all parts on the same vessel to ignore collisions with each other. Hopefully this will solve all part-to-part collision problems.
• Reduced the minimum collider intersection threshold to much less than before. Should increase collision accuracy and hopefully solve issues like landing gear going through the ground. (all thanks to above fix)
• [API Change] MemoryStream wrappers that were mistakenly not committed for 1.15.1 have been added to the code.
• Packing/Unpacking ships is now done without affecting the ship's scene hierarchy. Now, vessels take care of keeping their own parts in place while packed, making for much more stable physics behavior when going in and out of time warp.
• Improved vessel/part loading from persistence procedure, for more stable and accurate flight resuming.
• Fixed a bug in the Tracking Station scene, which prevented scrolling the vessel list.
• The Vessel Switching keys now only cycle between nearby vessels and won't cause the scene to reload anymore. To switch to far-away vessels, you must use the map view.
• Added key and axis bindings for EVA controls. Reorganized the Input Settings screen a little.
• Added separate control bindings for walking and jetpacking on EVAs.
• Added 1:1 EVA rotation axes. Using them disables the automatic orientation system.
• Fixed RCS and SAS toggling on other vessels.
• Vessels take collision impact momentum into account whenever possible
• Fixed a problem where vessels would be stuck as 'Landed' if boarding a part while in contact with another.
• Fixed issues with the large Landing Leg colliders.
• Added patcher auto-updater. Will redownload the patcher if a better version is available.
• Tweaked Physics settings to reduce landed part wobble.
• It is now possible to close the Flight End screen without leaving the flight scene (to switch vessels).
• Tweaked part collision handling for better efficiency.
• Landing Legs now use a much improved collision handling system, eliminating leg wobble on heavy ships.
• PartTools can now serialize WheelCollider components.
• Improved detection/response to vessels below terrain and much better terrain altitude detection for vessels.
• It is no longer possible to save the game (or switch vessels) while very close to the ground and not landed (could cause terrain fallthrough).
• Fixed the crew capacity values on the part.cfg files.
• Fixed the Orbit initialization routine, to prevent NaN errors on landed craft
• Fixed parts that use the Part class having a "Part Type not available" message on their descriptions at the VAB.
• mbm texture files are now DXT compressed and cleared from RAM as soon as they're uploaded to the GPU. RAM usage is massively improved.
• Fixed some issues with the patched conic solver not finding proper SOI transitions sometimes.

v0.15.2

Released 1^st June, 2012

Bug Fixes and Tweaks:

• Fixed an issue with part-to-part collisions that caused unphysical forces and caused some designs to break apart.

v0.15.1

Released 31^st May, 2012

Bug Fixes and Tweaks:

• Fixed a couple of issues with the parts action UI popups and their code bindings.
• Tweaked the time warp altitude limits. It is now possible to warp fast at low orbits around Minmus and the Mun.
• Tweaked the rotating reference frame thresholds when nearing planets, to reduce terrain mesh jitter.
• Fixed the 'Sierpinski' Terrain' issue, where the terrain mesh would break up when approaching a planet after travelling very far.
• Fixed an issue with the patched conic solver failing on some escape trajectories.
• Fixed the normal maps on several parts.
• It is now possible to set the persistent debris budget to zero, to disable saving debris completely.

v0.15

Released 17^th May, 2012

New:

• The Spaceplane Hangar Facility, allows you to build vehicles horizontally, and launch them from a Runway
• The Runway Facility, to launch from and land your spaceplanes at.
• A new Part Creation Toolset, allowing for animated models, with normal and emmissive maps.
• A deployable Landing Gear part
• A new AtmosphericEngine part type, and two new air-breathing engines.
• A Patched Conics trajectory projection system, shows your map trajectory as it enters and leaves the SOI of planets and moons.
• Parts now can have a context menu where you can view data and perform actions. (Atmo engines already implement this)
• Parts now visually display their temperatures through a dynamic emmissive heat map.
• It is now possible to manually rotate parts on the VAB and Spaceplane Hangar prior to placement (using the WSADQE keys, Shift, Space to Reset)
• It is now possible to trim the roll, pitch and yaw inputs by holding Alt and pressing the roll, pitch and yaw keys (Alt+X to reset).
• Added a small, far-flung second moon around Kerbin, called Minmus.

Bug Fixes and Tweaks:

• Fixed a security flaw with the updater tool.
• The flight log will no longer show the terrain tile IDs when crashing things into them. It will show the correct "crashed into terrain" message.
• Corrected the level of the ocean quadtree, so that it matches visually with the simulated water level.
• (Possibly) increased performance on the flight scenes (from the terrain tweak also)
• Found and fixed the true cause of the orbit NaN bug. (see last note on this page)
• Corrected the aileron action on ControlSurface parts. Now aileron input is determined based on part orientation instead of symmetry counterparts.
• Fixed an issue with joystick throttle when focusing/unfocusing the game.
• Fixed a problem with fuel lines and struts becoming attached to non-existent parts when reloaded.
• Fixed the behaviour of the Alt key when Alt-Tabbing out of the game.
• It is no longer possible to enter time warp or save the game if the ship is landed or splashed, but still moving.
• Several improvements to the scene lighting in the Spaceplane Hangar and Vehicle Assembly Building.
• Fixed Fuel Lines and Struts not reconnecting once reattached to the ship at the VAB and SPH
• Improved the part dragging on the editor scenes
• After a crash, the end flight dialog will only come up by clicking the left mouse button, hitting Esc or the Space Bar

v0.14.4

Released 3^rd April, 2012

New:

• Added Shader Model 2 fallback shaders for the terrain. Doesn't look as pretty, but solves the black terrain issue on SM2 video cards.
• Exposed terrain parameters on the Video Settings screen (Now called Graphics Settings).
• Option to force using SM2 shaders even on SM3 compatible hardware.

Bug Fixes:

• Sometimes vessels could still be seen as being under acceleration and not get saved. This is fixed now.
• Tweaked the terrain system to use less memory.
• Updated Kerbin's diffuse map, to remove the blue on the ice caps on map view and tracking station.
• Launching the updater with the game in fullscreen mode will no longer cause the updater to crash.
• The game will no longer launch the patcher if the latest update is available only as a full download. It will open the KSP Store instead.
• Changed the default game settings so terrain scatter is off by default

v0.14.3

Bug Fixes:

• Fixed an issue with prevented unfocused ships from being saved.
• Removed the KSC on the Mun (don't ask).
• Tweaked the altitude of KSC to better match the terrain level.
• Tweaked Kerbin landclasses to raise ocean and remove the blue from the ice caps.
• Fixed the Sun flare not getting obscured by planets on the Tracking Station view.

v0.14.2

Released 27^th March, 2012

New:

• Created a proper icon for the game.
• A completely overhauled terrain engine

Bug Fixes:

• Fixed the patcher launching any executable after it's done patching. Now it launches KSP.exe always.
• Fixed a potential security issue with the patcher authentication.
• The patcher will no longer spam console windows while doing its thing.
• Rotated the Mun back to it's original orientation (a fix on the 14.1 left it facing the other way).
• Improved the terrain correction system for landed vessels. It now compensates for terrain slope errors.
• The Map and Tracking Station cameras now respond to the camera control input axes.
• Fixed an issue with symmetrical parts not clearing references to decoupled counterparts.
• Fixed an issue with the patcher not being able to login using passwords containing special characters.

v0.14.1

Bug Fixes:

• Found and fixed the real cause of the staging issues that have plagued every release from 13.2 onward.
• The debug console is no longer spammed with NaN errors. This could cause extreme lag in densely populated game worlds.
• Fixed an issue where unloaded vessels would not update their orbits, causing them to resume incorrectly if they switched SOIs.
• Fixed the save folder paths on the Mac version (they were ending up inside the app package)
• It is now possible to do a Quickload (F9) after a crash (with the flight end screen up).
• The game will no longer overwrite the quicksave when resuming flights. Only when creating new ones.
• Landed vessels no longer explode when approached by the player (as when landing near other landed ships)
• Fixed an issue with landing detection when landed on other vessels.

v0.14.0

Released 3^rd March, 2012

New:

• Flights are regularly saved to file, to be resumed later. (yes, persistence )
• Support for multiple simultaneous flights and switching from ship to ship.
• The Tracking Station Facility at the Space Center, allows you to select and resume a flight in progress.
• Holding the middle mouse button will allow you to rotate the flight camera about itself, instead of rotating its pivot. (double-clicking the MMB will recenter it)
• Tweaked the orbit rendering on the Map View to reduce clutter when several icons are moused over at the same time.
• Landed or Splashed vessels now display their coordinates (or location, if available) when moused over on the Map View.
• More Crew Members so you can launch missions while others are underway.
• An External Module Loader, which enables mod makers to program their own part modules.
• Added small fuel tank and small engine parts
• Added Landing Gear
• Added a more efficient input lock for when vessels are in physics-hold mode, to prevent staging during that period.
• Made the Langing Gear action a mappable key.

Bug Fixes:

• The flight camera is no longer able to go upside down.
• The ORBITAL camera mode will no longer change orientations when switching spheres of influence.
• Fixed an issue with .craft file saving and loading, which makes it possible to save ship titles independently of the file name.
• Un-warping a landed ship will no longer cause an unphysical jerk on it, which could possibly destroy it.
• Landed/Splashed vessels no longer show an Apoapsis icon on the Map View.
• The Map Camera now responds to the keyboard bindings for camera zoom.
• Decouplers now obey the second law of physics (Acceleration = Force/Mass)
• Decouplers now obey the third law of physics (every action has an equal and opposite reaction).
• RCS Fuel Tanks now drain symmetrically if placed using symmetry.
• Fixed the flight scene time step being incorrectly initialized as 0.04ms (would cause wobbly physics).
• Fixed a problem with the Plugins folder in the Mac version, which caused the game to halt when loading.
• Fixed an issue that caused incorrect staging when loading ships in the flight scene.
• Reloaded parts were not storing references to their symmetry counterparts properly. That caused all sorts of weird behaviour.
• Fixed Fuel tanks apparently not resuming fuel levels properly (was an icon issue).
• Fixed the VAB tutorial never being shown after the first time, even when activated in the settings.
• Fixed the tutorial window disappearing behind the command pod selection window.
• Changed the ground detection system to a far more stable hold-and-release method.
• Fixed yet another staging issue.
• Fixed a game flow issue in which it was possible to cancel the flight end screen, leading to an error and leaving the game stuck in the flight scene.
• Fixed the End Flight screen lockup issue after KIA.
• Fixed the Alt+Tab locking staging issue. (was a poorly thought out control I had set up, which was removed)

v0.13.3

Demo

This release is also the demo version of the game.

Released 3^rd March, 2012

New on 0.13.3:

• A Stats Tracking System, so we can collect information of the game for statistical purposes.

Bug Fixes:

• Fixed a bug with symmetry in the VAB.
• Fixed an issue with the main camera that would create sporadic moments of lag in map view.
• Fixed a bug that caused symmetrical parts to lose the reference to one of their counterparts, leading to incorrect symmetrical placements.
• Reverted the Staging logic to the 13.1 system, as the changes made in 13.2 were buggy.

Note: 0.13.3 is an additional free version with bug fixes.

v0.13.2

Released 26^th January 2012

Bug Fixes:

• Fixed a bug with symmetry in the VAB.
• Fixed an issue with the main camera that would create sporadic moments of lag in map view.
• Fixed a bug that caused symmetrical parts to lose the reference to one of their counterparts, leading to incorrect symmetrical placements.

Note : As of the 26^th of January 2012, v0.13.2 is the final free version.

v0.13.1

Released 11^th January, 2012

New on 0.13.1:

• Recompiled on the latest version of the Unity engine, to add multithreaded rendering support and better memory management.
• Changed the Fuel Line flow direction, so fuel will flow from the first-placed end of the line to the second end.
• Holding Ctrl and clicking on a part on the ship at the VAB will now automatically flip the parts list to the selected part's page.
• Added in-game credits.

Bug Fixes:

• Fixed the custom part sounds loading system, which wasn't working on the last release.
• The part loader will no longer freeze if it cannot find a part module to load. It will load the base Part module, and make it visible but unavailable on the VAB.
• Removed parent-wise fuel crossfeed from Radial Decouplers. Fuel Lines made that obsolete.
• Fixed an issue that prevented attachment nodes from affecting connected part rotations properly.
• Fixed an issue with the part loader, which would crash if a binary mesh was found, but no .dae or .obj file was present.

v0.13

Released 16^th December, 2011

Optimizations:

• Removed a lot of needless halts on the part processing routine during loading.
• Restructured the sound loading system so the main loading thread doesn't wait for it to finish before moving on.
• Deferred adding of several part components so they're only added when they're needed.
• Mesh tangents can now be loaded from file, instead of being recalculated every time.
• The mesh loader now ignores materials from file, because they were going to be replaced anyway later.
• Meshes are now saved to binary files (serialized) when loaded for the first time, and loaded from those files when they're available.
• Changed the rendering method for the part icons on the staging sequence. This can prevent thousands of objects from being created when flying large ships.
• Ship parts now have adjustable levels of physics, so small parts are not as deeply simulated as large ones. This reduces the amount of physics objects and joints to simulate.
• Reduced the amount of code components attached to each part, making for less calls on each frame.
• Tweaked the part heat exchange model, for a considerable fps boost with very large ships.

New on o.13:

• The part loader will check if the saved optimized meshes are out-of-date, and update them when necessary.
• A new Fuel Line part, that allows fuel to be drained off external (side-mounted) tanks.
• It is now possible to warp time freely when the ship is landed.
• Added a progress bar for the loading screen.
• Pressing F2 will hide the UI completely (so you can take UI-free screenshots).
• Added a new icon for the Fuel Line parts.
• Changed the icon grouping rule on RCS Blocks and Strut Connectors to group to all parts of the same type on it's stage.

Bug Fixes:

• Fixed the mission timer not getting started if the first stage was moved before launching.
• Liquid Fuel now flows from the top attachment node, instead of from the parent part (unless there is no top node, in which case it flows from the parent part).
• Parts now keep the references to the part attached in each attachment node. (makes top-node based fuel flow possible)
• Fixed a bug which prevented the ship selection dialogs from receiving double-click events. Now it is possible to select a ship file by double clicking on it.
• Improved rendering of hyperbolic (escape) orbits in the map view. The trajectory is now a constant size regardless of eccentricity, and isn't warped by the splines.
• The Map camera will now remember it's last position, and return to it when the map is reopened.
• Fixed a problem that made it possible to delete the command pod in the VAB by using Ctrl+Z.
• Increased the heat conductivity and heat dissipation values for all parts, to compensate for the new heat exchange system.
• Exposed a 'thrustVector' cfg parameter for Liquid Engines. This allows you to set the 'default' thrust direction for an engine, same as with SRBs

v0.12

Released 11^th November, 2011

New on 0.12:

• A Moon
• New Orbital Camera Mode. Like Free Mode, but aligned to the solar system plane, like the Map View Camera is.
• New Auto Camera Mode. Chooses between the other modes based on the state of the flight.
• Liquid Engines now support thrust vectoring (gimballing).
• New LV-T45 Vectoring-Enabled Liquid Engine.
• The VAB will now allow you to select a Command Module before starting a new ship.
• Planets and Moons now rotate.

Bug Fixes:

• Improved the way velocities are applied when resuming physics.
• Fixed the Advanced SAS icon showing as a question mark on the VAB.
• Fixed a bug where cloning parts by removing and undoing would cause them to receive duplicate IDs (and crash the game when loading the ship again).
• Tidied up the flight statistics numbers formatting a bit, so they're easier to make sense of.
• Time Warp will now smoothly increase/decrease towards the set time rate, for a much more fluid transition.
• Made several improvements to the Map View orbit rendering.
• Fixed the rails->physics transition, so that there is no significant change anymore in orbital parameters when going out of warp.
• Made some significant improvements to the physical joints that hold the ship together. Ships will not wobble anymore when going back into 1x time after warping, and the joints themselves are more stable overall.
• Made a small tweak to the part tooltips on the VAB, to prevent them from going off-screen on small resolutions. (was noticeable with the new command pod selection dialog)

v0.11.1

Released 13^th October, 2011

Bug Fixes:

• A pausing glitch that would happen every time the menu was selected.

v0.11

Released 12^th October, 2011

New on 0.11:

• Overhauled Space Center terrain area in both flight and space center scenes.
• Integrated Orbital Analysis/Propagation system.
• In-Flight Time Compression.
• Orbital "Map" View.
• Orbit Display.
• Improved Space Skybox Background.
• Better Launchpad area textures.
• RCS (Reaction Control System) Module Part.
• Added an 'RCS Toggle' key (Default 'R'), to toggle the RCS on and off.
• Changed the useless Overthrottle LED for an RCS LED, which indicates if the RCS is enabled.
• Advanced SAS Module Part: Uses input-enabled parts (like winglets and RCS) to stabilize flight, but applies no forces of it's own.
• Splash-down effects, sounds and a basic buoyancy simulation.
• New "Atmosphere" Gauge in the UI, indicates how deep the ship is in the planet's atmosphere.
• The Orbit system can now track and propagate hyperbolic (escape) trajectories.
• Parts can now cast shadows on themselves.

Bug Fixes:

• Added a simple but hopefully effective stall simulation for winglets and control surfaces.
• Made a few optimizations to runtime loaded textures. Now they're compressed to DXT5 and support mipmaps.
• The MET display will now start counting on liftoff instead of on flight start.
• Tuned the terrain system a bit, to improve visual quality at high altitudes.
• Greatly improved the input lock system. Now, components that lock game controls won't override locks placed by other components.
• Improved the flight camera code. On Chase mode the camera will not spin around at the poles anymore, and both modes are more stable overall.
• Optimized the terrain system rendering, and got a nice boost in performance during flight.

v0.10.1

Released 13^th September 2011

Bug Fixes.

• Eliminated the sharp atmospheric cutoff at 34,500m. Now there is atmosphere up to around 68,000m.
• Improved the drag calculations.
• Created a new ControlSurface module to replace the problematic Stabilizer module. The Stabilizer is now deprecated.
• Changed the folder structure on the Mac version, so it is the same as the PC version.
• Removed the sensitivity/deadzone reset when reassigning joystick axes in the input settings.

v0.10

Released 6^th September, 2011

New on 0.10:

• Completely overhauled procedural terrain system. Much more reliable and stable.
• The whole planet can now detect collisions, so ejected parts can now land safely.
• The terrain mesh is far more stable, shorelines and mountains no longer wobble.
• The new terrain system is completely translation and rotation-safe. It can be moved dynamically without breaking visually.
• An Orbital analysis and propagation system, allowing for a complete planetary simulation, among many other possibilities, is ready for implementation.
• Terrain quads are now queded for subdivision, to improve performance
• The terrain system now allows for a secondary target object, so both the ship and the camera can subdivide the terrain.
• Mini settings screen for in-game tweaks.
• New (much better) shader for water.
• The R8 Winglet now responds to input, and can be used as an elevator, canard, aileron, rudder, or any combination.
• It is now possible to crank anti-aliasing up to 8x.
• Joystick Support.
• A working Mac OSX version!

Bug Fixes:

• Hi-subdivision tiles now have mesh colliders, which means the far side of the planet is no longer an insta-death trap.
• Fixed the textures stretching near the terminator
• The camera will no longer go through the ground.
• The terrain collision mesh now perfectly matches the visual terrain.
• Fixed a problem with the atmosphere, where it would fade in and out at specific points in orbit.
• Fixed a few problems with some game settings not being correctly applied on game start.
• Fixed a problem with the volume settings where explosions would sometimes sound out even with volume at 0%
• Added a basic compatibility/integrity check on loading ships. If it fails, the ship won't load but the game won't crash.""

v0.9

Released 12^th August, 2011

New on 0.9:

• Stages are now persistent when manually edited.
• Stages are now stored in relative values. This means they're now smarter
• Parts can now specify their preferred relative stage though the cfg
• Editing the staging sequence now creates Undo states.
• The Debug Console can now be opened in the loading screen to debug load problems
• Stages can now be manually created and, when empty, deleted
• Stages are now represented as groups with parts inside them, instead of just separated by indicators
• The staging stack now scrolls manually using the mousewheel (when mouseing over it)
• Icons in the staging stack can now be multiple selected and moved as a group
• Whole stages can now be dragged and repositioned
• Stages can now be reset manually through a reset button
• Empty stages delete themselves in flight
• Active parts in previous stages move up to the current stage.
• Parts on the VAB list will now display their stats when hovered over.
• The tooltip for parts in the VAB will no longer go lower than the screen
• Holding shift while selecting a part in the VAB will now select the pod so the whole ship can be moved
• Parts now have an ActivatesEvenIfDisconnected parameter on the cfg to allow them to be activated after jettisoning
• The VS Gauge now uses a log scale, to allow greater precision with small values
• The Strut Connector. A compound part to create physical linkages between any 2 parts
• Parachutes now have a 'useAGL' parameter. If that's enabled, it will deploy when it reaches deploy altitude from ground level
• Symmetrically placed Icons are grouped into a single icon
• Input Mapping screen
• Video settings screen
• Audio settings screen

Bug Fixes:

• Fixed a bug that caused parts to activate out of sequence sometimes.
• The scroll wheel is no longer read if the application is unfocused.
• Staging lock is now preserved if the application is unfocused and refocused.
• Fixed the MET clock, which would loop back to 00:00:00 when a mission went on for longer than 24 hours (I'm amazed someone found it )
• Changed the debug console key to Alt + the key left of 1. It would interfere with the throttle controls in flight.
• Fixed parachutes not deploying if not set to the last stage. (they can still deploy when jettisoned)
• Fixed a silent error when parts set an explosion potential higher than 1.0
• Eliminated the jitter on the VS gauge
• Changed the physical attachments between parts again, so the stack is less wobbly overall
• Fixed the bug that caused the crewmember name tags to drift out of the screen

v0.8.5

Released 18^th July, 2011

New on 0.8.5:

• Added copying of parts (and sets of parts) by holding Alt while clicking on them.
• Replaced tricoupler textures and UV mapping (UV map by Dippeggs)
• Parachutes can now deploy automatically if jettisoned along with other parts (allowing for parts to be safely landed)
• Stage decouplers can now share fuel across stages.
• Added Keys to control the camera in the VAB (+/- for zooming, pgup/pgdown for scrolling)
• Added Keys to control the camera in flight (+/- for zooming)
• Added some sound effects for the parachute opening
• Added cfg-definable parameter for parachute autodeployment delay
• Added a debugging console to the game (can be toggled with Ctrl+Alt+Shift+C)
• Right-clicking the Symmetry Button will now step the symmetry mode back.
• It is no longer possible to select a part of the ship while the mouse is over any interface items.
• Added toggle key to switch between precision or instant input modes (Caps Lock)
• Pitch, Yaw and Roll gauges change color to indicate mode (orange for instant, cyan for precision)
• Exposed Kd, Ki and Kp parameters for tuning the SAS and CommandPod modules

Bug Fixes:

• Fixed the staging lock LED not turning purple after launch
• Icons no longer show a transparent border floating around then mousing over disconnected parts.
• Fixed a bug where deleting a symmetrical part would sometimes leave it's counterparts floating around.
• Fixed a bug where creating a new stage with a decoupler and then removing it would generate errors.
• Fixed most sound volume decay over distance problems.
• Fixed a bug that caused a massive performance drop when fuel tanks emptied (fuel tank switch lag bug)
• The Flight camera will now remain always centered on the ship's center of mass.
• The Screenshot function will now create a Screenshots directory if one isn't found.
• The altimeter will now go past 999,999K correctly (it will move up to 1000M, then 1000G, 1000T and so on)
• Fixed a bug that could cause large ships to explode at 5,000m altitude.

v0.8.4

Released July 14^th, 2011

Bug Fixes:

• Fixed a small but incredibly disruptive bug which prevented engines from being connected to fuel tanks

v0.8.3

Released 14 ^th July, 2011

New on 0.8.3:

• Added key to lock staging, to prevent accidental jettisoning (remember to set it off later). Set to Alt+L
• Added a tooltip for the Symmetry Button

Bug Fixes:

• Fixed A TON of bugs with the symmetry and ship construction in general. Game is stable again.
• Fixed a bug where parts would lose staging info and revert to default when returning from flight to the VAB. (the staging reset bug)
• Fixed a glitch introduced in 0.8.3 RC1 that allowed parts to be attached to frozen parts.

v0.8.2

Released 13 ^th July, 2011

This version is a hotfix for a couple of ugly bugs found with the 0.8.1 release.

Note: The 0.8.1 release introduced a few changes to the .craft file format, so it is possible that ships created with versions prior to 0.8.1 might not be compatible with the new version.

Bug Fixes:

• Fixed a serious bug where swapping about symmetrical parts would crash the game
• Pod cannot be dropped if an Escape Tower (PunchOut addon) is attached

v0.8.1

Released 13^th July, 2011

New on 0.8.1:

• Added options to use Angle Snapping when placing surface-aligned parts.
• Symmetrical placement mode in the VAB.
• It's now possible to set aside a part of group of parts. This enables adding parts in between others without deleting half the ship.
• Sound Normalizer, keeps the volume balanced even with 50+ boosters firing
• Added framerate cap to keep GPUs from screaming on light scenes. (configurable through the settings.cfg file)
• Deleting a part now requires clicking the parts list. This prevents accidental deletion. (Or you can also press 'Delete)
• Fuel can now flow through Strut parts like the tricoupler

Bug Fixes:

• Fixed bug where starting a new ship with a loaded multi-stage ship would create empty stages
• Smoke trail effects now fade away when nearing the edge of the atmosphere
• Fixed SkySphere culling issues at large distances
• Added cfg parameter to enforce a symmetry mode when stacking (like 3 under the tricoupler)
• Updated editor tutorial to reflect the changes in this update

v0.8

Released July 7^th, 2011

New on 0.8:

• Saving and Loading buttons in the interface, as well as a ship loading dialog for picking new ships.
• Ship name field in the editor, allows saving ships with any filename.
• Screenshot button to capture the screen to file.
• functioning MET indicator in the flight UI
• Pages in the VAB part list, whenever the parts exceed the size of the list.
• New skins for the UI windows that pop up. (like the flight results dialog)
• A new splash screen before the main menu enters.
• SAS toggle with 'T' key
• Option to Simulate in Background in the settings.cfg file
• Undo/Redo actions in the VAB, by Ctrl+Z and Ctrl+Y
• Fuel tanks are now stackable to increase fuel amount (and weight )
• On-screen text popup to let you know the current camera mode
• Cfg interpreter can now parse 2D, 3D, and 4D Vectors, as well as rotations (in angle-axis format)
• Cfg-defined thrust positions and orientations, make retro-rockets and any other craziness open for addon parts.
• Parts may now create new stages for themselves through the cfg (used to be decouplers only)
• New texture for the Solid Rocket Booster
• The game now checks for updates against the KSP site, and let's you know if there is a new version available
• Loading screen moved to before the main menu appears.

Bug fixes:

• Liquid Engine particle effects responding to engine cutoff
• Icon indicators for all parts that need to show information
• Custom icons for all part types
• VAB placement bug with tricouplers and fuel tanks (and decouplers)
• Reposition the Navball and main camera focus, so the ship isn't obscured by the interface - this one is kinda moot now, since the new camera centers the ship better, and the navball doesn't hide the ship anymore.
• Pause also affecting particle effects
• Pausing the game no longer produces a G-force peak
• SRB mesh normals correction
• Complete rewrite of the flight camera code. No more jitters and a number of new options in the settings.cfg
• Relaunch button on pause menu. No need to end flight to relaunch.
• Version text on main menu resetting after returning to it from game.
• Inverted the middle mouse button zoom. Now mouseing forward brings the camera closer.
• The text on the stage indicators no longer appears over other interface elements
• Fixed excessive wobbliness with side-attached parts
• Radial decouplers now have their own module (they used to share modules with the stack decoupler)
• Increased the inclination range for the VAB camera from 45° to 80°
• Updated tutorial to reflect the changes made in this update (like the new cameras in flight).
• Tweaked the Radial Decoupler separation. It can now eject lit SRBs safely away from the ship and not kill the crew everytime.

v0.7.3

Released June 24^th, 2011

• Initial Release