Hidden Maze Game
On early Master Systems (with either no built-in game, or any game except Missile Defense 3-D, Alex Kidd in Miracle World or Sonic The Hedgehog), there is a secret built-in Snail Maze game.
No built-in game: turn on your Sega Master System without a game plugged in. At the screen that says to turn off your system and insert a game, press ![[Up]](http://www.smspower.org/pub/arrows/up.png)
+![[1]](http://www.smspower.org/pub/arrows/1.png)
+![[2]](http://www.smspower.org/pub/arrows/2.png)
.
Built in game (except Missile Defense 3-D, Alex Kidd in Miracle World or Sonic The Hedgehog): hold ++ and power on the system. Continue holding the buttons until the game begins.
See the main page for Snail Maze