Bugs: You might need to press Flag Twice to actually begin In the demo, press Down arrow to switch to Ice Mario and Up arrow to switch to Fire Mario. Press Space to shoot the respectful elemental ball, fire balls can can kill everything but Shells. Ice Balls can kill everything but the Snow King and Penguin. In order to face off against the Snow King, you need to get above a 2000 score, but you can press 8 to increase ur score. V2 notes: Now after the boss you switch to Luigi, unlike Mario he has free movement, so you can press Up Down Left and Right to move him and dodge the shells. Don't worry, as long as they don't touch the Shows he won't get hurt. Also now the enemies are random, before it was a set pattern,and there is also a chance for a Fire Flower to appear which makes you able to shoot 3 fireballs at once.
Mario, and some of the enemies in this game are based on characters from the Super Mario Bros. Franchise.
