The following are known Action Replay Codes for NFL Xtreme 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

Away Team Score 0
800af41e0000

Away Team Score 99
800af41e0063

Home Team Score 0
800af41c0000

Home Team Score 99
800af41c0063