Use arrow keys or WASD keys to move. The Goombas are replaced with Garts (those short red guys) same way to kill it, but if you touch a Gart, you die. However, there is a special block with a yellow question mark on it. Thats the Lucky block. The Lucky block is the same with Lucky blocks in the actual Mario exept it only gives a mushroom. If you touch the Mushroom you grow. If a Gart touches you WHILE you are in your big form, you dont actually die. You just shrink. Also theres coins which you try to collect. After you beat the game, it shows your score. Your score is the amount of Garts you killed added up with the coins you collected. Have fun!
Thanks to Super Mario Bros for the ideas for a lot of stuff I include in my game (I also changed some up).