I didn't see this under Super Mario Bros., so I thought I would post this. Using the Game Genie code ZIGPSK, I found some very odd versions of levels. First, the title screen is different, featuring a castle. When you start the game, you start on world 4-1 (which is called [glitch]-1) where there is no Lakitu, but there are goombas and koopa troopas.World [glitch]-2 is an underworld (level with underground music) that takes place underwater. Strangly, you can't swim there. World [glitch]-3 is a very glitchy version of 8-2 (no Lakitu on that one either, but I remember that it was very easy to die on this level). Dying on that level will cause Mario to continuesly walk to the right until he falls to his death. Yes, he walks through the wall. I will do more reasearch, as I havn't gotten past [glitch]-3. Also, it turns out that world 1-1 would be underwater, as you can use a code that allows you to play it that way.
