Snail_Maze
Snail Maze
1986 video game
Snail Maze is a 1986 video game by Sega for the Master System. Instead of being released on a cartridge, it was built into the system's BIOS[1] and could be played by starting the system without a game cartridge inserted and holding Up and buttons 1 and 2 simultaneously. Some later console models included a minimal BIOS because of memory constraints, and Snail Maze had to be removed. These systems instead included a built-in Alex Kidd in Miracle World or Sonic the Hedgehog. Snail Maze was never released in cartridge or card format.[2]