Gear Stadium is a Sega Game Gear sports game, likely focusing on baseball. Released in Japan, this title is less documented. Its gameplay likely involved classic baseball game mechanics such as batting, pitching, and fielding, simplified to fit the handheld system's limitations. The developer is less certain but likely was an internal Sega team or one closely affiliated with them given the title's association with the Game Gear system itself.  Its Japanese-only release suggests it might have been a more regional title.

Gear Stadium (Japan)

Ganbare Gorby! (Japan)