SuperTuxKart, also known as STK, is a free and open-source kart racing video game, distributed under the terms of the GPLv3+.

TrackMania (series) is a custom track building racing game.

TORCS (The Open Racing Car Simulator) is an open source 3D car racing simulator available for Linux, FreeBSD, Mac OS X, AmigaOS 4, AROS, MorphOS and Microsoft…