The Final Battle (New Super Luigi U)
From the Super Mario Wiki
The player starts on a platform as their character watches Bowser Jr. slam down on a bone platform in his Junior Clown Car, and he continuously does this throughout the level. It sinks, then the level starts. Two Magmaws are in the lava. A Red Ring appears, and after three bone platforms, the first Star Coin appears. Multiple bone platforms appear after that, along with two Magmaws. A row of ? Blocks is found, followed by another row of bone platforms. Then, a door appears. This leads to Bowser's door. Entering Bowser's door gives the players an extra 250 seconds.
The player must work their way through the hall. They encounter Bowser. They must hit the ! Switch on the other side of Bowser, causing him to fall. The player progresses in saving Princess Peach. Meanwhile, Magikoopa (assisted by Bowser Jr.) puts a spell on Bowser, which makes him huge. The player character makes their way up stairs, and notices Princess Peach in a tower. She calls for the player character(s), but bars trap her, along with a wall covering the window with the Bowser Jr. logo. Bowser Jr. comes up, laughs at the character(s), then flies up to allow the gigantic Bowser to hop up.
To damage him, the player must wait for Bowser Jr. to slam down in his Junior Clown Car. They must then jump on him, knocking him out. Then they must hop in and the player must press to go higher. Then, when at Bowser's head, the player must press to slam down. Bowser will then go into his shell, and slide about, occasionally going higher, so the player can run under him. Bowser will soon pop out, breathing fire in the air. The player must complete this action three times to defeat Bowser.
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