Legend of the Four Keys is a fan-made Super Mario World hack with 43 exits. The Mushroom World is in danger—a growing void is about to wipe everything out, and the only way to stop it is by finding the four Legendary Keys. Mario and Luigi have to track them down before it’s too late. The game has four themed zones that you can tackle in whatever order you want, similar to Super Mario Land 2. The challenge is fair, about what you’d expect from an official Mario game—nothing as brutal as Lost Levels though. If you’re looking for a solid SMW hack to try, you can grab it fast and easy on KBHGames. It’s a standard platformer with familiar mechanics, just with a fresh twist. Players who enjoy classic Mario gameplay will feel right at home.