We are still searching for game pictures and screenshots for WCW Mayhem (Nintendo 64). We do not have any cheats, codes, or hints yet.

Complete "Quest For The Best" mode with a non-Cruiserweight wrestler under the hard difficulty setting.

Enter CBCKRMS as a PPV password to unlock all the hidden rooms. To fight in the rooms during a one-on-one match, run to the entrance. You and your opponent should start jogging towards the back. Note: You can choose which room you want to fight in from the match options of the match setup screen.
The backstage rooms are:
Bathroom
Boilroom
Storage
Loading
Locker
Hallway
Ticket Office
Day Car Park
Night Car Park
First Aid
Night_Office
Day_Office
Media_Room

Enter "PLYHDNGYS" as a code at the PPV codes screen to unlock all bonus wrestlers.

Enter PLYHDNGYS as a PPV password. Note: The hidden wrestlers that were unlocked cannot be saved (enable this code with each game session).

Complete "Quest For The Best" mode with a Cruiserweight wrestler under the hard difficulty setting.