Champion Wrestler (Arcade)

Champion Wrestler (Arcade)
Developer: Taito Publisher: Taito Platform: Arcade (Taito L-System) Released internationally: 1989 This game has debugging material.

Stage Select

1. Press and hold the Service Credit button as soon as you power the board on.
2. When the "SERVICE SW ERROR" screen appears, immediately release the Service Credit button (you have 5 seconds to release it or the Easter egg won't work).
3. Then press Start (x3) followed by the Service Credit button once followed by Start for a final time.

You'll be given 9 credits and, after choosing your wrestler, you'll be taken to a round select screen.

(Source: cmonkey)