Super Mario Bros. X features some modes that make the games easier/harder. They can be acessed via cheating or options in level testing.
Probably the best of all. It makes you immune to any hurt, even lava(PS: It don't work if you fall propusely into a hole.
Grab All modeEdit
You can grab any NPC you find.
Show FPS modeEdit
Shows the frame rate on the upper-left corner of the window.
Max FPS modeEdit
Cheat: speeddemon Probably the worst. Makes the game force the FPS to max speed.