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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,...

Although it is optimized for 3D astronomical visualization, Celestia can be used to display and explore other 3D environments, too. The free space...

Orbiter is a free and realistic space flight simulation program for the Windows PC. Orbiter gives you an idea what space flight really feels like....

A squad-based tactical strategy game. All you need to play UFO Alien Invasion is a computer running Microsoft Windows or a supported version of...

Anim8or is a 3D modeling and character animation program. Here's an entertaining tutorial on animating a walk cycle. All items are free to view,...

Freeciv is a Free and Open Source empire-building strategy game inspired by the history of human civilization. The game commences in prehistory...

Flare is an open source, 2D action RPG licensed under the GPL3 license. Its game play can be likened to the games in the Diablo series. Using the...

FlightGear Liveries are like paint schemes for aircraft. They tell you what airline they come from. This FlightGear how-to episode teaches you...

FlightGear how-to download and install the latest version. FlightGear is a flight-simulator created by an international group of volunteers, and...

FlightGear is a flight-simulator created by an international group of volunteers, and released as free, open-source GPL software. It has been used...

Frets on Fire (FoF) is a free, open-source Finnish music video game created by Unreal Voodoo. Players use the keyboard to play along with markers...

Hedgewars is a turn based strategy, artillery, action and comedy game, featuring the antics of pink hedgehogs with attitude as they battle from...