Play a fun-filled Mario game as you try and complete all 22 levels filled with chuckles and giggles in Mario Giggle World! Mario Giggle World is a 2017 fan-made ROM hack of Super Mario World for the Super Nintendo Entertainment System. This ROM hack features 22 levels along with dozens of unique bosses spread throughout all 3 new worlds. Although the current version of this ROM hack is incomplete and only serves as a DEMO of the full version, the game already features 3 new worlds, 7 exits, custom bosses, and 22 custom-made levels. Will you be able to complete all challenging levels? Good luck!