Open source flight simulator for UNIX and Windows.
2D robot simulator for Java in which you complete missions by changing the behavior of bugs.
3D city simulator for Linux.
Artificial life simulation for Linux that takes into account terrain, age, sex, culture, and movement.
3D car racing game for Windows running in singleplayer time attack mode.
3D future racing game for Windows with infinite road. You must set the best time between two checkpoints.
An old 3D car driving game for DOS in which you enter competitions with monthly changing tracks.
Accumulate wealth at the expense of others' suffering by picking up patients with your ambulance in this 3D driving fantasy for Windows. [Open Source, GPL]
Race a car in the mud for Windows.
An animated cat that sits on your Windows desktop, chases the mouse pointer until he catches it, and performs other kitty activities. (Open Source)