The following are known Action Replay Codes for MechWarrior 2: 31st Century Combat Arcade Combat Edition on Sony Playstation (PS1).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay, CodeBreaker & GameShark

Never Overheat
800d12680000
800d126c0000

Infinite Ammo
800d12de0064
800d12fa0064
800d13160064
800d13320064
800d134e0064
800d136a0064
800d13860064
800d13a20064
800d13be0064
800d13da0064

Mystery Super Code
80076ce4ffff

Speed Increase
800d163c0343

Cruise Control
80076ce40400