had been an outstanding system seller for the NES, so Nintendo were always going to launch the Game Boy with another fresh Mario adventure. With tricks like these, we're glad this game didn't come to western NES consoles. Now the players that thought they were so crafty have to head back to the total beginning of SMB2, or commit suicide in the nearby pit and merely return to the start of 3-1.

In this strange world beyond the castle you'll find a classic Mario warp pipe, only with the number one over it. How to get it: As you approach the end of 3-1, you'll come by a trampoline that - with a perfectly executed jump - will take players right over the exit. The devs knew players would be searching for new Warp Zones and if you can get beyond the goal pole in 3-1, you'll find one, but that pipe will take you back to the start of the game!

SMB2 is certainly tough (to the point of cruelty), and the hidden secrets have a similar mean streak. 2 was made for an audience that had explored every corner of the original and were looking for a real challenge.

The secret: The Japanese version of Super Mario Bros.

Super mario bros negative world