Kerbal Space Program

KSP is a game where the players create and manage their own space program. Build spacecraft, fly them, and try to help the Kerbals to fulfill their ultimate mission of conquering space.

Commercial Mac OS X Windows Linux Playstation Xbox

Pioneer

Pioneer is a space adventure game set in the Milky Way galaxy at the turn of the 31st century. The game is open-ended, and you are free to explore the millions of star systems in the game.

Free Open Source Mac OS X Windows Linux

Universe Sandbox

Universe Sandbox is an interactive space simulator for Windows based PCs. Unlike most astronomy software that just shows you what the sky looks like or where the planets are, Universe Sandbox is a powerful gravity simulator.

Commercial Mac OS X Windows Linux Steam

Oolite

Oolite is a space sim game, inspired by Elite. Among Oolite's several similarities to its inspirational source, the gaming experience is enhanced by the context set...

Free Open Source Mac OS X Windows Linux

Vega Strike

Vega Strike is an Open Source 3D Action-Space-Sim that lets you trade, fight, and explore in a vast universe. Vega Strike is built on top of OpenGL and runs on...

Free Open Source Mac OS X Windows Linux

Orbiter

Orbiter is a realistic 3D real-time space flight simulator program. Fed up with space games that insult your intelligence and violate every law of physics? Orbiter...

Free Windows