Mr. Marmelade by Daydream Devil Games is a puzzle game made for Nintendo Game Boy.
Mr. Marmelade enters a dungeon that bristles with 16 increasingly challenging mazes. Navigate through tight corridors and activate the switches on the floor to complete a room. But beware: Once you hit a wall, you will be back to square one. A precious reward awaits you if you reach the end and if you make it without crashing, there is also a secret treasure.