This boulder was probably supposed to roll down a hill in Act 1. Leftovers from the curved tunnels found in the AutoDemo prototype.Ī 32×32 rock that was used in the AutoDemo prototype. Tiles similar to the gray bricks were used in the AutoDemo prototype. Most likely intended to be a checkpoint marker, like the 8-bit versions of Sonic 1.Īqua Lake Zone, Green Hills Zone, Gimmick Mountain Zone, Scrambled Egg Zone all have many unused tiles, as do Sky High Zone Act 2 and Crystal Egg Zone Acts 1 and 2. May have slowed you down, like the Speed-Down sneaker in the 2-player mode of Sonic 3. May have given a random amount of rings or items, like in the 2-player mode of the Genesis version. While you can find this in a wall in Crystal Egg Zone, the graphics are obscured. Normally, only its head and neck can be seen. The final version uses an updated sprite. Sonic's death sprite from the Master System Sonic 1. They were used in the AutoDemo prototype, though. While the majority of the game's Sonic graphics were copied from the Master System version of Sonic 1, the waiting animation was changed, rendering these three frames unused. Probably meant to be used in the ending cutscene when he is rescued. Unused Graphics Character Sprites Artwork