The following are known Action Replay Codes for Grand Theft Auto 2 on Nintendo Game Boy / Color (GB / GBC). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

Infinite Health
010577d6

Have All Weapons
01ffa0d6

Infinte Pistol Ammo
015088d6

Infinte S.Gun Ammo
01508cd6

Infinite Uzi Ammo
01508ed6

Infinite Cocktails
015090d6

Infinite F.thrower Ammo
015094d6

Infinite M.Gun Ammo
015096d6

Infinite Rockets
015092d6

Max Cash
9199a3d6
9199a5d6
9199a7d6