Kerbal Space Program

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This game is currently undergoing beta testing and development - information here may change frequently and could be outdated or irrelevant.
Kerbal Space Program
Release dates
Early access
Early access
Early access
Kerbal Space Program at Steam Charts
Kerbal Space Program at SteamDB
 Kerbal Space Program at Wikipedia

Key points

Disadvantage Currently doesn't make much use of multi-core processors.[1]

General information

More information Official forum
More information Official wiki
More information Steam Community Discussions


Source DRM Notes Keys
Official website DRM-free
Steam Availability Table Icons - Steam.svg
Information If you purchased via the official store before March 20, 2013 you have the option of turning your DRM-free copy into a Steam key. After doing so, you will no longer have access to the DRM-free version unless you purchase another copy.[2]

Essential improvements[edit]


Information Many modifications are available and can be found on
Information While there is a demo version available, the full game is required in order to use mods.

Game data[edit]

Configuration file(s) location[edit]

Windows <path-to-game>/KSP_win/settings.cfg
Linux ~/.config/unity3d/Squad/Kerbal Space Program

Save game data location[edit]

Windows <path-to-game>/KSP_win/saves/
OS X <path-to-game>/saves/
Linux <path-to-game>/saves/
Information All saves are in the installation folder. If you're backing up, don't forget the ships folder! Saves from Windows version can also be used in OS X and Linux versions. Using saves from different versions (for instance, 0.19 save in a 0.20 version) may cause some issues, such as objects from the old save clipping through ground. Version 0.21 introduced a new save game patcher that will try to patch older save games in order to correct such issues. To use it, simply place the old save in the new saves folder. When you try to load the old save, a pop up will appear asking if you wish to patch the save.
Disadvantage This game does not support the XDG Base Directory Specification on Linux.

Save game cloud syncing[edit]

System Native Notes
Steam Cloud Impossible
GameSave Manager Native

Video settings[edit]

Graphical settings.
Graphics option Option WSGF Notes
Widescreen resolution Native WSGF WS Gold.svg
Multi-monitor Native WSGF MM Gold.svg
Field of view (FOV) Impossible
Windowed Native Clicking outside of the game's screen will minimize the game.

Use -popupwindow launch option to address this problem

Borderless fullscreen windowed Native The game's Fullscreen mode is actually borderless windowed Fullscreen.
Anisotropic filtering (AF) Impossible
Anti-aliasing (AA) Native 2x,4x and 8x MSAA
Vertical sync (Vsync) Native Also supports VSync at half refresh rate
High frame rate Native

Input settings[edit]

Remapping menu, with all the submenus.
Keyboard and mouse Native Notes
Remapping Native
Mouse acceleration Impossible
Mouse input in menus Native
Mouse Y-axis inversion Unknown
Controller support Native
Full controller support Impossible mouse essential in VAB
Controller remapping Native Buttons, and axis
Controller Y-axis inversion Unknown

Audio settings[edit]

Audio options Native Notes
Separate volume controls Native
Surround sound Impossible
Subtitles Not applicable All speech is text-based.
Closed captions Not applicable
Mute on focus lost Impossible


Language UI Audio CC Notes
English Native Not applicable Not applicable

Issues fixed[edit]

Information Various fixes to common problems are available on the official FAQ page.

System requirements[edit]

Minimum Recommended
Operating system (OS) XP 7
Processor (CPU) Intel Core 2 Duo Intel Core i3
System memory (RAM) 2 GB 4 GB
Hard disk drive (HDD) 1 GB 2 GB
Video card (GPU) 512 MB of VRAM
Shader model 3.0 support
1 GB of VRAM
Shader model 4.0 support
Operating system (OS) Snow Leopard
Processor (CPU) Dual Core Intel
System memory (RAM) 2 GB
Hard disk drive (HDD) 1 GB
Video card (GPU) 512 MB of VRAM
Shader model 3.0 support
Operating system (OS) (Most distros should work)
Processor (CPU) Intel Core 2 Duo
System memory (RAM) 2 GB
Hard disk drive (HDD) 1.5 GB
Video card (GPU) 512 MB of VRAM
Shader model 3.0 support
Information 64-bit Arch Linux users who experience crashes in the main menu when launched from Steam should set a launch option of LC_ALL=C %command%_64


  1. KSP and 8 core CPU
  2. Kerbal Space Program Blog, Steam Keys are up.