Super Mario Kart Xtreme puts you on the streets as you race crazily past all sorts of friends and foes. Diddy Kong, Double Dragon guys, Koopas, Goombas, Hammer Brothers, Spinys, and the most annoying and difficult of all: the falling stone blocks. If you are going fast enough, you will splatter any of the aforementioned baddies into a bloody mess but if you are going too slow, you will take damage instead. The stone blocks are a constant menace. Beware.