NHL Breakaway '98
Cheat Menu

At the Main Menu press C-left, C-right, C-left, C-right, R, R.

Extra Teams

At the Team Selection screen, press C-up, L, and C-left. Between The Mighty Ducks and The Controller pack team should be three new teams (New York, Salt Lake, and Ports Unknown). These teams are better than any other team.

Big Player

Go to Create Player and enter the name grEEn jeLLo (case sensitive) for a 300 lb. monster player.

Bonus Points
At the Main Menu for the Season mode you can get 100 more bonus points if you press C-left, C-left, C-right, C-right, C-left, C-left, C-right, C-right, R, R.

Perfect Player
Go to the "Create A Player" option. Then enter the name "Jim Jung". You should be able to change your player's attributes and still have a perfect player. This also works on prospect players, plus you can up them to 100 in every attribute.