From Kerbal Space Program Wiki
Jump to: navigation, search
Beta release
024 wallpaper.png
Released 7/17/2014
Announcement Kerbal Space Program: First Contract Now Available
Steam Steam Community
0.23.5 0.24.1

Version 0.24, called Kerbal Space Program: First Contract was released on July 17th, 2014. It introduces mostly new mechanics for career mode and rebalances mostly engines for the large size.



  • Added Funds and Reputation as new career mode currencies.
  • Funds are required to launch vessels.
  • Part costs are now used in career mode.
  • Resources like liquid fuel and monopropellant now have costs of their own, which figure into the cost of a launch.
  • Tweaking a part's resource sliders in the editors will adjust the cost of the vessel accordingly.

Mission Control

  • The Mission Control facility is now active in career games.
  • Mission Control allows the player to select contracts, review them, and either accept or decline them.
  • Added Gene Kerman as advisor in the Mission Control screen, ready to give his opinion about what the player's doing.
  • The Mission Control screen also features an 'archives' tab, where previously-completed contracts can be reviewed.


  • Contracts require to complete objectives, in order to gain Funds, Science and Reputation
  • Once accepted, contracts must be completed before the deadline expires.
  • Contracts will fail if the deadline expires or if some critical parameter fails (like killing a Kerbal in a mission to rescue him).
  • Added procedurally generated 'mission briefings' for contracts, which may even make sense sometimes.
  • Contracts come in three levels of Prestige ("Trivial", "Significant" and "Exceptional"). Higher levels offer greater rewards and are usually more ambitious.
  • Reputation regulates the amounts of each level of contracts on offer.

Early 'Starter' Contracts

  • First Launch: Launch any vessel.
  • Altitude Records: Set a new altitude record.
  • Reach Space: Escape Kerbin's atmosphere
  • Achieve Orbit: Achieve a stable orbit around Kerbin.

Dynamically Generated Contracts:

  • Part Test: Perform a test of a part in a specific location, situation and within given flight parameters (when applicable).
  • Collect Science: Return or transmit any scientific data from a specific location.
  • Rescue Kerbal: Rescue a Kerbal who is stuck in orbit.
  • Plant Flag: Plant the Agency's flag on the surface of a given location.
  • Explore: Complete several exploration goals for an unexplored location.


The record seeking Kerbin World-Firsts Record-Keeping Society
  • Added Agencies, which offer contracts.
  • Each agency has its own personality traits, which affects the generation of the contracts they offer.
  • Agency Logos added from the winners of the Community Logo Design Contest.
  • Clicking the agency logo in the Mission Control screen will display extra info about the Agency.

Vessel Recovery

  • Recovering vessels now refunds for the value of recovered parts and resources.
  • Recovered value varies based on distance from the Space Center. Land at the Runway for 100% value.

Space Center

  • Added a universal time clock to the KSC scene UI.
  • Added a Pause Menu to the KSC scene, instead of leaving to the main menu immediately on pressing the Quit button.
  • The KSC Pause Menu allows saving and loading with a custom filename.


  • Added new UI Toolbar, which exists in all game scenes and is mod-friendly.
  • Added new UI Widget to display state of ongoing Contracts in Flight, KSC and the Construction Facilities.
  • Added new UI Widgets to display the current amount of Science, Reputation and Funds.
  • Added Messages UI App, shows messages about contracts and such.
  • Redesigned the Resources Panel from flight as a toolbar app, overhauled panel graphics.
  • Overhauled the old 'Science Summary' dialog into a complete 'Mission Summary', displaying information about recovered Experiments, Parts and Crew.



  • Added Windows 64-bit executable.



  • Added 'Science' Game Mode, where Science is the only currency and Mission Control is closed (as in pre-0.24 'Classic' Career).

Bug fixes and tweaks


  • Asteroids are now able to collide with other asteroids.
  • New launches now start with throttle set to 50%, like in older versions of the game.
  • Saving restriction when throttled up removed.
  • Timewarp restriction when throttled up removed. Engaging time warp now automatically cuts throttle.
  • Improved logic for detecting a vessel in 'orbiting' situations.


  • Fixed a bug in the editors where dragging a part off the ship and deleting it straight away would not generate an undo state.
  • Fixed a bug where ctrl+clicking over a part in the build area would not reveal the part in the parts list.
  • Orientation of VAB scenery rotated so spacecraft orientation is consistent at launchpad.
  • VAB Flag moved to the opposite wall.
  • Redesigned the Parts List UI 'Footer' section where the symmetry and angle snap options reside.

Tracking Station

  • Fixed a bug where map objects were created but never removed, leaving dozens of 'leaked' objects behind.

Space Center

  • Launchpad and Runway Launch Dialogs now show vessel costs.
  • Added 'Edit' Button to Launch Dialogs, which takes the player to the VAB or SPH to edit the selected vessel.
  • Launch Dialogs and Craft Browser now allow selecting vessels with 'invalid parts' (for editing).
  • Added new Pre-Flight Checks to prevent launching vessels containing invalid parts or with costs exceeding available Funds.

Solar System

  • Allegedly Kerbin's solar day instead of sidereal day is changed to be exactly 6 hours long which makes the sidereal day is now 59 seconds shorter. This change can't be confirmed. See #Change of Kerbin's rotation.
  • Slight optimization to Kerbin, Mun and Eve surface shaders.


  • Resource flow mode can now be defined for each propellant on Engine, EngineFX and RCS Modules in the part config.
  • Previously useless Engine Nacelle and Radial Engine Body parts have been repurposed as air intake + fuel tank combos.
  • Tweaked Costs for almost every part.
  • Tweaked Mass for several parts, especially spaceplane fuselage sections and structural components.
  • Fixed a potentially gamebreaking issue when activating a Separator if it was the root part of a vessel.
  • Fixed a bug where some particle FX (mainly on newer engines) would cause a stream of errors when the vessel was unloaded with the FX active.
  • Fixed a bug where StrutConnectors could cause hierarchy issues if linked in certain configurations.
  • ModuleRCS can now use multiple resources.

Tech Tree

  • Revised R&D node layout so 'control' type nodes have a more logical progression.
  • Moved basic RCS parts to tier 4 (from tier 5).
  • Added more connections into aerodynamic parts from other nodes on tiers 5 and 6.

Progress Tracking

  • Fixed an issue introduced in 0.23.5 where unowned vessels could complete progress nodes.
  • Fixed AltitudeRecord progress node (now used for contract generation).


  • Fixed crewmembers not being properly flagged as dead if their vessel was destroyed while unloaded.
  • Crewmembers are now keyed by name in the roster, and can properly be added and removed.
  • Added reputation reward and penalty for recovering and killing crewmembers.
  • Added new unique names for Kerbals, suggested by the Community Logo Design Contest winners.


  • Fixed issue with persistence when reverting to flight.
  • Added rich text support to several UI text fields.
  • Fixed several cases of texture point-filtering issues resulting in crooked text.
  • Fixed potential crash related to reentry FX on Linux when no depthtexture hardware support is available.
  • Overhauled all UI screens and text. All text fields using Arial font now use proper Calibri.
  • Exposed Gameplay difficulty options to the Alt+F12 Debug Toolbar.
  • Updated Credits Scene.
  • Fixed permission issues with KSPLauncher which prevented it from properly launching the game on Linux.
  • Messages displayed on the upper-right corner in flight are now displayed above the crew portraits instead.
  • Removed a 'rogue' tooltip from the Staging Reset button at the VAB and SPH.

Change of Kerbin's rotation

According to the official changelog, Kerbin's rotation was changed in such a way that the solar day instead of the sidereal day is six hours long. This would mean the sidereal day is slightly shorter and thus the altitudes of synchronous orbits are lower to accommodate for that. But measurements taken on the Launch Pad reveal that the rotational speed is identical in 0.19, 0.23.5 and 0.24.2. The speed also supports, within rounding errors, that the sidereal day is six hours long.

The rotational speed can be obtained when the speed shown in the navball is changed to orbital while sitting on the ground. As the craft is doing a circle around the center at that latitude at a constant speed it is possible to calculate the time the craft needs to do one rotation. Using that number the rotation is only six seconds shorter than six hours and not almost a minute shorter as reported by the changelog.