Bart Simpson in Mario World Game

How to play the game "Bart Simpson in Mario World Game"?

Wait a minute, this doesn’t look like Springfield! Bart Simpson has been playing so many video games lately that he seems to have got himself stuck in Mario World! He’s counting on you to play him out of there. Use the arrow keys on your keyboard (the up arrow will make him jump)! Make sure you avoid the green snakes and balls of fire! Hmm, we wonder what the rest of the Simpsons will say when Bart finally makes it home...

by Lilou, Lea and Lee