Sonic Labyrinth may look like Sonic 3D Blast, but it sure don't play like it. Instead, the game is based on finding keys and getting to the exit within a set time limit.
There's apparently some unused graphics.
Press Up (x2), Right (x3), Down (x6), Left (x9) at the title screen to replace the Sound Test with a Level Select.
The Virtual Console release altered the Speed Shoes animation due to the original animation having fast, flashing lights that could potentially trigger epileptic seizures in some players.