Luigi's Mansion 64

Luigi's Mansion 64 is a ROM hack for Super Mario 64. The hack uses the same levels as Super Mario 64, although they are highly modified. The overworld layout is also mostly the same but the levels are shuffled around quite a bit. This means that the game will feel very familiar to fans of the original. The only level from SM64 not to make an appearance in this hack is Snowman's Land.