Doors o' Plenty
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Doors o' Plenty is an e-Reader level for Super Mario Advance 4: Super Mario Bros. 3. The level contains five Advance Coins and the Super Leaf e-Coin. Its official difficulty rating is ★★★★☆. This card was released as part of series 1 in Japan and North America. The former depicted Lemmy Koopa on the keyart, while the latter depicted a Boo Buddy.
This level is a maze with lots of doors, as the name suggests and Boos. There is an area that contains a Control Coin block, which leads to another room with an e-Coin inside. At the end of the level, a battle with the Big Boo, similar to the one in Super Mario World, takes place. This particular battle is a little more difficult than in Super Mario World, due to the inability to throw Ice Blocks upward. The Big Boo can also directly damage Mario or Luigi here unlike in Super Mario World, but only if he is solid.
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