Pro Yakyuu GG League is a Japanese baseball game on the Sega Game Gear. Similar to other baseball titles on the platform, it would have simulated gameplay featuring batting, pitching, and fielding.  Specific details on the teams and other features would necessitate specialized research into Japanese game publications and databases from the period.  Further investigation is required to identify the exact developer and publisher.

Pro Yakyuu GG League (Japan)

Prince of Persia (USA, Europe) (Beta)