GG Aleste is a Sega Game Gear shoot 'em up. The GG prefix indicates it's a Game Gear exclusive game. Gameplay revolved around vertically scrolling shooting stages, shooting down enemies, and collecting power-ups.  The game's title suggests it may be related to the Aleste series; thus, the developer was likely Compile, the original developers of the Aleste franchise, or a studio working under their license.

GG Aleste (Japan)

Gear Stadium Heiseiban (Japan)