SM64 Test Worlds I - Luigi's Haunted Castle
A minihack that uses early versions of levels from Mario's Nightmare 64. The outside of the castle was remade into the Vanish Cap stage, and there is a lava section that was remade into Bowser 1. The SMW haunted house themed level was however unused and never made it into Mario's Nightmare 64. Included in the SirRouven1003 Level Pack.
The hack only has a German version and is not available in English.