Tower Of Druaga, The (Japan) - Gameboy Color - Action RPG

You control a heroic knight, who is actually prince Gilgamesh, who must attempt to rescue the maiden from the demon Druaga. You are armed with a sword and shield to attack and defend. You move from floor to floor, which are constructed as mazes, searching for the key; this key will unlock the stage exit. Items can be found by killing (all) enemies.