The following are known Action Replay Codes for BattleTanx: Global Assault on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Infinite Tank Bucks
80236a9f0064

Level Select
80117f490001

Invulnerability
80125ab00001

Start With All Weapons
80125ab10001

Secret Level
80125ab20001

Enable Models
80125ab30001

Cassandra Gang
80125ab50001

Brandon Gang
80125ab60001

Mini-Tanks 1
80125ab80001

Mini-Tanks 2
80125ab90001

Mini-Tanks 3
80125aba0001

Mini-Tanks 4
80125abb0001

Mini-Tanks 5
80125abc0001