Motocross Madness is a motocross racing simulation developed by Rainbow Studios and published by Microsoft, released in 1999 for Windows 95 and 98. The game blends realistic bike physics with arcade-style action, offering three primary racing disciplines: Supercross (indoor stadiums with technical jumps and turns), National (outdoor tracks across varied terrain), and Baja (open wilderness point-to-point racing through checkpoint gates). Players can also compete in the Stunt Quarry, a free-roam mode that rewards pulling off death-defying tricks while landing safely. A robust physics engine governs bike handling, momentum, and rider reactions, demanding precise throttle, brake, and weight transfer control. Motocross Madness supports multiplayer over LAN and the Internet, including a unique Moto Tag mode where players hunt the "it" rider. The game ships with a track editor for creating custom Supercross courses, and features hardware-accelerated 3D graphics with detailed bikes, dust trails, and dynamic lighting. Audio includes a CD-quality rock soundtrack and realistic two-stroke engine sounds with 3D spatial effects. A gamepad is highly recommended for the best control experience. Motocross Madness was praised upon release for its successful fusion of simulation depth and accessible, addictive gameplay, quickly becoming a benchmark for the genre on PC.