Extreme-G (known as XGRA: Extreme-G Racing Association in Japan) is a futuristic racing game developed by Probe Entertainment and published by Acclaim Entertainment for the Nintendo 64 in 1997. The game features a variety of tracks and vehicles, with a focus on high-speed racing and intense action. Players race against up to seven other computer-controlled opponents on tracks set in a variety of environments, including deserts, canyons, and futuristic cities. The game also features a variety of weapons and power-ups that can be used to gain an advantage over opponents. The game was well-received upon release, with critics praising its visuals, audio, and gameplay. The game was a commercial success, selling over one million copies worldwide. Extreme-G is considered a cult classic and is often cited as one of the best racing games of the Nintendo 64 era.