This isometric Game Gear title from Minato Giken had you exploring four maze-like levels for keys to open a goal gate and battling a boss at the end of three Acts. With uninspiring level design and slow, soupy movement, this is a '3D' Sonic that removes the key ingredients of a Sonic game. Sonic Labyrinth was available for 3DS, but is only really for masochistic Sonic completionists.