Use the left/right arrow keys to move and use up arrow to jump. Avoid touching enemies, or you'll lose health. Collect mushrooms to gain health, and collect a 1UP mushroom to gain a life! (Also collect 20 coins to get a life.) Jump on top of trampolines to bounce high, and don't stand on the checkered platforms for too long or you'll fall! In the boss battle, Bowser will move back and forth a few times spitting fireballs along the way and then he'll get down low. Then's you're chance to jump on his head using the trampoline! Do this 3 times to win.
I chaged this to V0.3