Druaga no Tou, meaning "Tower of Druaga", is a Game Boy title that is likely a dungeon crawler, puzzle, or action RPG. The Japan-only release points toward a localized title with a smaller international reach. Its gameplay might have featured exploring a labyrinth-like tower, solving puzzles, and battling enemies.  Further information about the developer and the specific elements of the gameplay would require deeper research into Japanese gaming archives.

Druaga no Tou (Japan)

DragonHeart (France)