FlightGear Flight Simulator: free open-source multiplatform flight sim
WW2 U-boat simulation
3rd Party Video Games Developer: MetalManGames, titles of games
C++ OpenGL 3D Game Dev Lib [moved to: play.ru.net/src]
SpaceStations, StarShip Division.
Opengate is a Jumpgate remake
A fast-paced free software rally racing game
A planetarium software that shows a 3D simulation of the night sky
3D Space Station Simulator (inspired by SS13)
A 3D vehicle physics programming project created by Mikko Oksalahti.
An open source controller for Scalextric community
A 3D simulator game where you can drive, fly, and sail