MX vs. ATV Unleashed is a full version lifestyle program designed for Windows by Rainbow Studios. The game introduces a track editor for the first time, allowing players to create their own ultimate off-road environments. The game features a variety of specialized supermoto, short track, hill climb, and waypoint races, providing players with an immense freeworld experience. The game also offers a range of freestyle competitions, mini-games, and challenges.

Players can take on the racing world in an attempt to knock off motocross and ATV riders in over 50 technical supercross and rugged outdoor tracks. The game introduces new off-road vehicles, including two new ATV models, a redesigned monster truck, and two new pimped out 4x4 golf karts. The game also features ultra-realistic physics, with Rainbow Studios' "Rhythm Racing" physics engine perfectly re-creating each vehicle's real-world handling to conquer all dangerous terrain. MX vs. ATV Unleashed offers an open class competition, allowing players to race numerous off-road vehicles in six-player multiplayer races.