List of easter eggs

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An Easter Egg is an intentional inside joke, hidden message, or feature in a work such as a computer program, video game, movie, book, or crossword.

Easter egg (media) on Wikipedia

In Kerbal Space Program, there are this corresponds to any anomalous formations on the surfaces of bodies in the Kerbol System (or indeed on the Main Menu, in IVAs, or anywhere really) which have been deliberately added by the developers. This does not include things which were not added deliberately, like terrain glitches. Some say that some of these easter eggs remain undiscovered as of today.

This page contains spoilers, as you have already been warned. For any who wish to preserve the sense of exploration, please do not continue.


  • None known


  • Although itself a terrain glitch, the Mohole (a large, steep vertical "tunnel" at Moho's north pole) could be considered an easter egg, since anomalous forces are present around its rim, which may well be deliberate, and the fact that the mohole has its own biome, the Northern Sinkhole.


  • None known


  • None known


Toilet in the exploded Astronaut Center
  • In the ocean just south of the KSC, about midway between land and the southern ice cap (about 30° 0′ 0″ S 80° 0′ 0″ W), engraved into the ocean floor is a giant smiley face, best seen from orbit or on a topography map like File:Kerbin heightmap.jpg. Also surprisingly it's really close to kerbin a lowest trench according to kerbal maps. Maybe there is some secret underwater down there?
  • The inland KSC at (20° 40′ 15″ N 146° 29′ 48″ W) actually has its own biomes, even including launch pad. if a flag is placed on it and you try to launch a rocket, it will make you remove the flag.




The Giant Kerbal Face of Duna


  • Magic Boulder - Missing since 0.18 - The magic boulder used to orbit Ike at an altitude of 15 km with zero eccentricity and an inclination of 80 degrees. The mesh (physical surface) for the magic boulder did not match its texture (visible surface) which could result in ships apparently digging into the surface with no ill effect. It would also cause ships to explode seemingly spontaneously, sometimes metres away from the surface, displaying "vesselname crashed into Magic Boulder" in the Flight Log. It also seemed to glow green as if radioactive, and there was a Monolith on its leading edge. The boulder had no gravity, did not appear in the map view and could not be targeted, much like any other easter egg, except in orbit. The Magic Boulder is believed to still be somewhere in the game's code.


  • Ring System of Asteroids - Asteroids now spawn around Dres in a circular formation. To be able to see and track the asteroids, you must travel to Dres first.


  • None known


  • There is a biome called "The Sagan Sea" which may be a reference to Carl Sagan.


Formation on Vall




  • None known


  • None known.

Unused Story

Although not fully implemented, Nova Silsko originally had a plot concerning the Easter eggs. (


  • While not easter eggs per se, the exact geographical poles of most bodies have highly unusual topography, usually making them inaccessible, see terrain glitch.


An average of the skin color in Kerbal arm textures compared to the rumored colors
  • The color of the Kerbals' skin is close to is #BADA55 (   ) in hexadecimal but does not match it exactly. The hexadecimal RGB value spells like “badass” in leetspeek. Some say #84D455 (   ) is the color of a Kerbal which is even further away than #BADA55. This connection is rumored, because Kerbals can have a BadS flag, which is usually interpreted as badass.


  • Some of the cockpits have post-it notes and other humorous writings inside them. The writing is somewhat blurry on normal settings and hard to read, but still legible. For transcripts of the notes, see the respective part pages.
  • When a specific button/set of buttons are pressed, in the mk1 cockpit, the iva view changes to show the back and a screen saying "docking mode" is there, suggesting it may have been intended to fit two people (please help add to this)


Loading Screen

Main Menu

  • One of the two main menu images is that of a Kerbal standing on the Mun's surface, with Kerbin in the background. There is a 1 in 40 chance that a sand castle made of Mun dust can be seen at his feet.
  • There is another main menu image with multiple kerbals, apparently digging out the crashed lander. Note that this is not in the stock game and is in fact added by the toolbar mod.


The Kerbal XX orbiting Duna
  • During the Space Station One scenario, by zooming out far enough to show the planetary map, a ship by the name of 'Kerbal XX' can be seen orbiting around Duna in a near-equatorial orbit (as of 0.23)


  • If you look into the patcher log, before updating, the log says "HOLD ON TO YOUR BUTTS!"


See also