PCGame

Kerbal Space Program

Physics-based spaceflight sandbox for building and piloting homemade spacecraft

Squad · Published by Private Division · Released Apr 27, 2015

IndieSimulation

Reviews
Overwhelmingly Positive
95% of 128K
Recent reviews
Overwhelmingly Positive
97% of 735 in 30 days
Players
3,052
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
3 years ago
Jan 25, 2023
Minimum PC
DX10 (SM 4.0) capable
4 GB RAM · 3 GB disk
Full requirements

Metacritic: 88/100 (critic reviews)

What is Kerbal Space Program?

A single-player spaceflight simulation set in the Kerbol solar system. You run the Kerbals’ space program by assembling vehicles from functional parts, launching and maneuvering them, managing crews, and exploring planets and moons. Science, Career, and Sandbox modes focus on research, program management, or unrestricted construction.

For you if...

  • +you enjoy trial-and-error building and realistic orbital physics
  • +you want science, career, and unrestricted sandbox options
  • +you like learning through difficult spaceflight experiments

Not for you if...

  • −you want simple, intuitive spacecraft construction and controls
  • −you prefer action over detailed rocket design and orbital planning
  • −you want to explore space with other players

What players say

95% of 127,820 reviews are positive · 97% of 735 in the last 30 days

Players praise the trial-and-error spacecraft building, orbital physics, and how the simulation teaches real spaceflight concepts; longtime players also value its mods. Common complaints target the steep, unintuitive learning curve and awkward construction controls. Some players also report save problems and bugs affecting the interface and flight calculations.

Players over time

▼ -27% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 3,536 players on Oct 4, 2026.

Show the data
DayPlayers
Nov 7, 20263,052
Nov 6, 20262,379
Nov 5, 20260
Nov 4, 20262,394
Nov 3, 20262,469
Nov 2, 20262,499
Nov 1, 20262,688
Oct 31, 20262,721
Oct 30, 20262,091
Oct 29, 20262,061
Oct 28, 20262,151
Oct 27, 20262,330
Oct 26, 20262,511
Oct 25, 20263,021
Oct 24, 20262,964
Oct 23, 20262,574
Oct 22, 20262,586
Oct 21, 20262,466
Oct 20, 20262,581
Oct 19, 20262,834
Oct 18, 20263,249
Oct 17, 20263,063
Oct 16, 20262,599
Oct 15, 20262,574
Oct 14, 20262,643
Oct 13, 20262,777
Oct 12, 20262,994
Oct 11, 20263,247
Oct 10, 20262,936
Oct 9, 20262,787
Oct 8, 20262,830
Oct 7, 20262,866
Oct 6, 20263,024
Oct 5, 20263,169
Oct 4, 20263,536
Oct 3, 20263,325
Oct 2, 20263,022
Oct 1, 20262,982
Sep 30, 20262,958
Sep 29, 20263,005
Sep 28, 20263,093
Sep 27, 20263,493
Sep 26, 20263,227
Sep 25, 20262,967
Sep 24, 20262,841
Sep 23, 20261,779
Sep 23, 20262,966
Sep 22, 20263,015
Sep 21, 20263,446

Screenshots and trailer

Kerbal Space Program screenshot 1

Kerbal Space Program system requirements

Minimum: DX10 (SM 4.0) capable, 4 GB RAM, 3 GB of disk space.

As published by the developer.

Can my PC run Kerbal Space Program?

Tell us your graphics card once and every game page will answer this for you.

Set up my PC →

Minimum

OS
Windows 7 SP1+
Processor
Core 2 Duo 2.0 Ghz
Graphics
DX10 (SM 4.0) capable, 512MB VRAM
Memory
4 GB RAM
Storage
3 GB HD space

Recommended

OS
Windows 10 64-bit
Processor
Core i5
Graphics
DX10 (SM 4.0) capable, 1GB VRAM
Memory
8 GB RAM
Storage
4 GB HD space

Does Kerbal Space Program have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Kerbal Space Program run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • Some text entry requires manually opening the on-screen keyboard
  • All functionality is accessible with the default controller configuration
  • In-game text is legible on Steam Deck
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows, macOS, Linux
Steam features
Workshop, Cloud saves, Family Sharing, Trading cards
Languages
Text only: English, Spanish - Spain, Simplified Chinese, Japanese, Russian, French, Italian, German, Portuguese - Brazil.

Does Kerbal Space Program use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Nov 6, 2026. How to filter AI games on Steam

Tags

Recent updates

2 DLC available.

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