Sonic Labyrinth is an action and puzzle game developed by Minato Giken and published by Sega for the Game Gear in 1995. The game features Sonic the Hedgehog exploring maze-like stages from an isometric perspective. Dr. Robotnik has robbed Sonic of his trademark speed, so Sonic walks slowly but can roll into a ball and dash across the stages. Critics thought the game was a unique addition to the Sonic library but flawed by convoluted controls and repetitive gameplay. It has received generally negative reviews in retrospect and is considered one of the worst Sonic games ever. Sonic Labyrinth was rereleased on Sonic Adventure DX and on Sonic Mega Collection Plus, as well as the Nintendo 3DS in 2012.