Mystery House Marathon
Mystery House Marathon, or World Crown-Mystery Box, is the final Mystery House of Super Mario 3D World, with each challenge lasting 10 seconds for a total of 300 seconds (five minutes) and is the only one to contain thirty Green Stars, Boom Boom and a Stamp. It is the longest course in the game, with thirty Green Stars to collect. Some of the challenges in this level are harder versions of the Mystery Box levels from previous courses or previous Mystery Houses.
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