Sword of Saros (Atari 2600 - a2600)
Work your way through the labyrinth of the evil wizard in the dungeon to find fragments of Saros sword. When you find all the pieces, you can leave the dungeon, the game ends. However, the master sent the bat to track you down. When a bat finds you, the master will teleport to the location and send waves of skeletons after. You must avoid the skeletons to get to the master and send it again looking for. Magic items you find along the way will help you in your quest.