Dirt Bike 3D is a motorcycle simulation and action game. Using
complex physics, it accurately simulates a dirt bike being
ridden over various types of terrain. You design the bike, and
you control the throttle and shifting to race against other
networked players or computer-controlled bikes. Registered users
can create tracks of any shape, including huge jumps, hill
climbs, motocross, trials courses, drag races, and half-pipes.