A free transportation simulator game
An open source process simulator
A 3D simulator game where you can drive, fly, and sail
a very lightweight advanced terrain-rendering and 3D map rendering sys
Articulated-body simulation engine written in C
A train simulator wroten in Java.
The free and Open Source hockey simulator
A web-browser based viewer for opensim/OpenSimulator
Automatic chooser of optimal fleet (with limits) for ogame browser gam
realistic truck & car simulator, with OpenGL graphics