DiRT is a rally driving game for Windows from Codemasters.
In DIRT you will compete with vehicles like buggies of all kinds.
Nu Generation Games Ltd.
It is a game in which players battle giant bugs, commandos, and a conspiracy.
It includes new cars and some updated physics on some of the cars.
The TORCS Team
TORCS is an exciting open source racing car simulator with many features.
With professionally designed tracks and two distinct game play modes.
Drop rocks on snails and snakes with your ladybug.
Rocks'n'Diamonds is an entertaining arcade-style game. Also free.
Cars vs Trucks, the fun PC game will give you 50 Unique Challenging Dirt Mazes.
Codemasters Racing Studio
DiRT Rally is an off-road car racing game with nice 3D graphics.
Dirt Track Racing: Pinball brings together the essence of the popular pinball.
Terminal Reality, Inc
4x4 Evolution 2 - the unique dirt-grinding racing world.
UKDirt F2 is a software pack bringing new cars to the popular game UK-Dirt.
Milsoft Flash Eraser software - Erase SWF dirt easily.
Mud, dirt, gravel all deforms dynamically as you drive through.
Noisebud Bompa is an application made to add bottom and dirt on drum loops.
Astragon / ETS
Dig for pay dirt and form your own civil engineering company.
Funn Mountain Bike
FUNN is a cool and hip brand of bike components for MTB and Dirt Bike riders.
Max Dirt Truck is an interesting sport game for free.