This page contains Pro Yakyuu World Stadium Codes for TurboGrafx 16 called "Hidden Screen" and has been posted or updated on Aug 23, 2010 by kinsey1212.
- Developer: Namco
- Publisher: Namco
- Genre: Sports
- Release: May 20, 1988
- ESRB: Not Set
At the title screen, hold I + II + Select and press Run.
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