The following are known Action Replay Codes for Darkstalkers: The Night Warriors 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

Player 2 Power Boost
800CD6E0 0051
800CD602 00FF

Infinite Energy Player 2
800BDB04 0090

Infinite Energy Player 1
800BDB00 0090

Infinite Time
800CD85A 0063

Player 1 Power Boost
800CD36E 0051
800CD36C 00FF