The following are known Action Replay Codes for Countdown Vampires 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

M-60 W/Inf Ammo Slot 3
800b2fa6006b
800b2faa0063

44 Magnum W/Inf Ammo Slot 3
800b2fa6006a
800b2faa0063

M37 Shotgun W/Inf Ammo Slot 3
800b2fa6006d
800b2faa0063

Infinite Health
800b2f860064

Infinite Cash
800b2f90270f