How to get the Secret Challange Mode
If you have beaten the game, then you can use this code. First, you need to be on the map screen. Then you need to pause the game. While it is paused, press the following buttons in this order: L,R,L,R,X,X,Y,Y. It will show a message telling you that you did it right.
What this code does: When you're playing a level, the screen can't mscroll backwards. There will be an arrou sign telling you if the level uses this function. This makes the game seem even more like the orignal SMB on the NES!
P.S.: To disable the code, just put in the cheat again!
Added by: cobo5951 Apr 14th 2007, ID#2446