F-Zero AX is the fifth / sixth released installment in the F-Zero series and the successor to F-Zero X. The game continues the series' difficult, high-speed racing style, retaining the basic gameplay from the Nintendo 64 title. The in-game differences between F-Zero AX and GX lie in particular to their number of vehicles and tracks. Both games have their own exclusive tracks, vehicles and vehicle parts. However, everything in the Triforce version can be unlocked in the GameCube version, Albiet with extreme difficulty.