Mystery House Marathon

Mystery House Marathon, or , is the final Mystery House of Super Mario 3D World, with each challenge lasting 10 seconds for a total of 300 seconds. It is the longest course in the game, with thirty Green Stars to collect.

Challenges

 * Green Star 1: A room containing three Koopa Troopas that must be defeated to collect the Green Star.
 * Green Star 2: A set of three swinging platforms, and one rolling spike bar, the Green Star is at the end of the platforms.
 * Green Star 3: A room with three P-Switches and two Brolders; all switches need to be activated.
 * Green Star 4: A room containing four Torches that have to be lit for a green star. A rectangular ? Block with a Fire Flower is at the back of the room.
 * Green Star 5: A room rotating counterclockwise containing three rows of Peepas rotating clockwise and a Green Star on top of a tall cabinet.
 * Green Star 6: A room containing twenty wooden Crates. The Green Star is in the top right group, bottom left Crate.
 * Green Star 7: A room containing a Goomba and six Micro Goombas who need to be defeated to collect the Green Star.
 * Green Star 8: A landing with five Baseballs over a slope with a group of four Biddybuds flying in front of the Green Star which must be collected by throwing the baseballs.
 * Green Star 9: A room containing four Hop-Chops and a out of reach Green Star. The rightmost Hop-Chop is the only trampoline and can be used to reach the Green Star.
 * Green Star 10: A room containing two Thwomps and a footlight path. The Green Star sits on the second level of the room and can be reached by taking a Thwomp to the star.
 * Green Star 11: A sled run with Walleyes and the Green Star at the end.
 * Green Star 12: A room with rooms separated by tall blocks to the right and left with a small P-Switch and the Green Star in each respectively, with a long ? Block with a Super Bell. The cat suit can be used to climb each wall.
 * Green Star 13: A Bullet Bill Base-esque section with the Green Star at the top. The cat suit is again utilized here.
 * Green Star 14: A room containing Blast Blocks for stairs that lead to a large block whose bottom starts at the top of the stairs with a Green Star at the top. The cat suit is used to reach the top.
 * Green Star 15: A room with four falling blocks, with the Green Star at the top. The fourth block falls when the player hits the one before, making it imperative to jump.
 * Green Star 16: A circular wall rotating counterclockwise with two groups of Fuzzies rotating clockwise. The Green Star is in the middle of the wall in a top opened box.
 * Green Star 17: A room with seven Boost Pads and a Rabbit holding the Green Star.
 * Green Star 18: A room containing a Trampoline and five Baseballs, with a small P-Switch at the top on the right side wall that must be hit for the Green Star to appear.
 * Green Star 19: A rotating wooden circle maze containing two Piranha Plants and a Green Star.
 * Green Star 20: A platform and two Bullies. When they are defeated the Green Star will appear.
 * Green Star 21: A room containing three Extending ? Blocks and an out of reach Green Star. The Cat Suit could also be used.
 * Green Star 22: A sky platform containing three Boost Pads, two Bill Blasters, Cat Bullet Bills and a Green Star at the end of a narrow walkway.
 * Green Star 23: A room containing five Piranha Creepers, four as stairs and one as an obstacle, with the Green Star at the top.
 * Green Star 24: A room containing three P-Switches, two Thwomps, one Bomb and five Baseballs. Two of them are protected by Thwomps and the third by Gray Brick Blocks that have to be blown up by a bomb. The Gamepad can also be used to activate the P-Switches.
 * Green Star 25: A room containing two Potted Piranha Plants and two groups of Fuzzies, who must be defeated to collect the Green Star. The two Potted Piranha Plants also must be defeated.
 * Green Star 26: An automatically rotating hill with Piranha Plants and Brick Blocks and a Green Star at the end.
 * Green Star 27: A room with Gray Brick Blocks up against the wall, a Search Light and Cat Bullet Bills. The Green Star is in top left corner.
 * Green Star 28: A Donut Block Bridge with two Spikes at the end along with the Green Star.
 * Green Star 29: A room containing Boom Boom, who can be defeated in one stomp.
 * Green Star 30: A straight pathway with Coin Stacks, a stamp and a Green Star all laid out in a row with small jump off of a cloud. The final star.

Enemies

 * Boom Boom
 * Para-Biddybuds
 * Brolders
 * Bullies
 * Cat Bullet Bills
 * Fuzzies
 * Goombas
 * Micro Goombas
 * Koopa Troopas
 * Peepas
 * Piranha Creepers
 * Piranha Plants
 * Walleyes
 * Spikes
 * Thwomps

Stamp

 * In the final room, in plain sight.

Trivia

 * This is the only Mystery House to contain Boom Boom or a Stamp.
 * This is also the only Mystery House to contain 30 stars.