A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
A free transportation simulator game
Simutrans is a cross-platform simulation game where players try to successfully manage transportation systems between places by land, air, and water for passengers, mail, and goods. Planes, ships, trains, trams, trucks, buses, or monorails are at your disposal, but factories operate based on contracts and passengers can only travel to their set destinations.
OpenTTD is an open source clone of the Microprose game "Transport Tycoon Deluxe". For more recent versions visit our website: http://www.openttd.org
A 3D simulator game where you can drive, fly, and sail
Rigs of Rods is a 3D simulator game where you can drive, fly and sail various vehicles using an accurate and unique soft-body physics engine. Since 2014, the development continued at https://github.com/RigsOfRods/rigs-of-rods UPDATE: 10/30/2016: removed opencandy installers, replaced with zip files.
WW2 U-boat simulation
SDL/OpenGL based WW2 german submarine 3d simulation, multilanguage support, multiplatform support with advanced sound and graphics. Please visit dangerdeep.sourceforge.net for any news or visit us in #dangerdeep on freenode IRC.
PC conversion of famous karaoke game - Singstar. UltraStar allows a computer to evaluate how good you are when you sing by analyzing your voice pitch. Sing your favourite songs and see how you improve.
MFCTI is an RTS mod for Operation Flashpoint: Resistance. Create troops, vehicles, and bases. AI players can substitute humans allowing practice matches and co-op games. Includes a point & click interface and command system.
VR Flight Simulator with real world scenery and new aircraft
Cosmosair Flight Simulator (Cosmosair FS) is the next generation virtual reality (VR) flight simulator aimed mainly at x64bit computer systems (MacOSX, Windows, Linux) that integrates a 360º Degrees VR Engine. It comes packed with first-class Up-to-Date World Scenery and State-of-the-Art 3D Aircraft Models. It allows you to fly into Space and back to the Earth seamlessly. You can fly to Mars within it's atmosphere and explore it's landscape... or even fly and land on the Moon. You can perform orbital space flights near our earth or in far planets. With Cosmosair FS you can become a better pilot flying commercial airliners or military aircraft. You can do pre-established missions, set your own missions or discover the solar Sytem planet by planet with NASA's Shuttle or SciFi Spacecraft. Cosmosair FS comes packed with top-notch features that sets it apart from it's counterpart flight simulators. CosmosairFS is under active development and will be soon unveiled.
A city simulation game, a polished version of the classic LinCity game. In the game, you are required to build and maintain a city. You can win the game either by building a sustainable economy or by evacuating all citizens with spaceships.
Java version of Stellarium.