The following are known Action Replay Codes for NFL GameDay 98 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 Scores 0
800f47c80000

Away Team Scores 50
800f47c80032

Home Team Scores 0
800f47c40000

Home Team Scores 50
800f47c40032