Extreme-G 2 is a racing video game developed by Probe Entertainment and published by Acclaim Entertainment for Nintendo 64. It is the sequel to Extreme-G and is followed by Extreme-G 3.

This iteration, as with all Extreme-G games, is about futuristic racing: pilots race plasma-powered Tron-like bikes in an intergalactic Grand Prix at speeds that are over 999 mph. Each of the machines have their own handling characteristics, with varying top speeds, armor values and traction values. All of the machines in the game have an energy meter—with two separate energy stores for protective shields and a basic primary weapon. If a machine loses all of its shield energy, it will explode on contact, causing the player to lose a life or the match. It is also possible for players to fall off the tracks when driving through jumps or similar obstacles. In this case, the player is simply teleported back to the track. Players are given three "Nitro" boosts per race. Extreme-G has a championship mode ranging from novice to expert, shoot-em-up mode (named "Arcade Mode" in XG2), multiplayer racing, and deathmatch. In shoot-em-up/arcade mode, computer drones follow a lunar path while the player attempts to destroy them with Extreme-G's arsenal of weapons.