Artemis is a multiplayer, multi-computer networked game for Windows computers.

Artemis simulates a spaceship bridge by networking several computers together. One computer runs the simulation and the "main screen", while the others serve as workstations for the normal jobs a bridge officer might do, like Helm, Communication, Engineering, and Weapon Control.

Artemis is a social game where several players are together in one room ("bridge") , and while they all work together, one player plays the Captain, a person who sits in the middle, doesn't have a workstation, and tells everyone what to do.

Zigfrak is an independently developed space shooter and RPG.

The Apollo 11 visualization draws together social and technical data from the 1969 moon landing in a dynamic 2D graphic.

The purpose of this project is to provide an emulation of the on-board Apollo guidance computers, along with some ancillary items needed to make the emulation do something interesting.

Project Apollo for Orbiter is an add-on for Orbiter which recreates the Apollo missions.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

From the early quest of the Mercury program to put a man in space, to the historic moon landings, through the Soyuz link up, and the first un-tethered space walk by Bruce McCandless, When We Left the Earth is the incredible story of humankind's greatest adventures, as they happened, told by the people who were there. Featured in the series is never-before-seen footage from NASA's secret film vaults, digitally remastered into stunning quality.

Forty years after man's first steps on the lunar surface, reaching the Moon is still a metaphor for an impossible journey. But while the astronauts who walked on the Moon became household names, the creators of the machines that made those journeys possible have been largely forgotten. Yet, from the impossibly gigantic Saturn V rocket to the fragile “tissue paper” lunar lander, the stories of these miracles of engineering are every bit as extraordinary as those of the men who flew them.

the Orbiter Simulator wiki

The free space simulation that lets you explore our universe in three dimensions

SpaceEngine is a free space simulation software that lets you explore the universe in three dimensions, starting from planet Earth to the most distant galaxies. Areas of the known universe are represented using actual astronomical data, while regions uncharted by human astronomy are generated procedurally. Millions of galaxies, trillions of stars, countless planets!

KSP is a game where the player creates and manages his own space program.

Build spacecraft, fly them, and try to help the Kerbals to fulfill their ultimate mission of conquering space.

Dedicated to Elite, Frontier and Astronomy

Artemis is a multiplayer, multi-computer networked game for Windows computers.
Artemis simulates a spaceship bridge by networking several computers together. One computer runs the simulation and the "main screen", while the others serve as workstations for the normal jobs a bridge officer might do, like Helm, Communication, Engineering, and Weapon Control.

open source space simulation game

This clip is raw from Camera E-8 on the launch umbilical tower/mobile launch program of Apollo 11, July 16, 1969. This is an HD transfer from the 16mm original.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

Would you like to own the computer Neil Armstrong used to land on the moon in 1969? Well, that's possible now, because a geek named John Pultorak created a working reproduction of the Apollo Guidance Computer (AGC), wrote a complete manual that will allow you to build your own Apollo flight computer clone and released it in the puclic domain.

Epiar is an open source, open-ended space action/trading game.

Privateer: Ascii Sector is a 100% free space combat/exploration/trading game for Windows, Mac OS X and Linux. You start with a simple spaceship and can then accept missions or trade goods to earn enough money to upgrade your ship or buy a new one. The game offers a wide variety of missions, commodities and ships -- a lot more than the original Wing Commander: Privateer, on which this game is based.

The purpose of this project is to provide a computer simulation of the onboard guidance computers used in the Apollo Program's lunar missions, and to generally allow you to learn about these guidance computers. Since this can be quite intimidating, we invite you to look at our "kinder and gentler" introductory page before immersing yourself in the full, gory detail presented by the bulk of the website.

Space MMO

ORBITER is a free flight simulator that goes beyond the confines of Earth's atmosphere. Launch the Space Shuttle from Kennedy Space Center to deploy a satellite, rendezvous with the International Space Station or take the futuristic Delta-glider for a tour through the solar system - the choice is yours.