World 8 (New Super Mario Bros.)

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World 8 is the final world of New Super Mario Bros. Mario & Luigi traveled to this world in New Super Mario Bros. after defeating Monty Tank and/or Lakithunder. The boss of this world is Dry Bowser. He acts like regular Bowser, but he also throws bones. This makes it hard to jump over him. There is also a very simple way to defeat him, as Super/Fire/etc. Mario can simply run through him and trigger the Skull Switch. Then, after Mario and Luigi defeat him, a new bridge appears outside, and they head into a volcano.

After traversing through four more levels, they reach the second tower, filled with serpentine platforms. Finally, they reach Bowser's Castle, separated by other castles by its size and green color. At the boss fight, there is a brief animation of Bowser Jr. laughing, then putting Dry Bowser's remains into a cauldron (which resembles a scarecrow/Clown Car hybrid). A larger-than-life Bowser exits. Bowser & Bowser Jr. turn around and look at Mario, and start the final boss fight (An unfair 2 vs 1 battle). After that, Peach is freed and gives them a kiss, and the credits appear.

8-Bowser Castle

Mario, avoiding one of the level's many Thwomps.

Mario fighting Bowser and Bowser Jr.

World 8-Bowser Castle is the final level New Super Mario Bros., being Bowser's Castle. The Mario Bros, once inside, will encounter a massive amount of traps, including Rocket Engines and Thwomps. The level is the longest in the game, and some parts of it require pressing one of the many ? Switches to be found. These switches will flip the gravity of the castle upside down, and any enemy along with it. This action is required for getting to certain doors.

The second part of the castle is a long looping room, similar to the looping castles of 4-4 and 7-4 from Super Mario Bros. After that is the boss door.

Once inside the room, the player will encounter Bowser Jr. on a long bridge over a deep pit. He will toss his father's bones into the couldron, thus reviving him, much to Peach's horror.

The duo will then fight Mario together, with Bowser Jr. using his usual shell-tossing tactic, and his father breathing flames behind him. After the player defeats Bowser Jr, his father will increase his attacks greatly. Mario must then run under one of Bowser's giant jumps and hit the Skull Switch at the end of the bridge, ending the fight and winning the game.

Enemies Introduced

• Kab-omb
• Sledge Bro.
• Fire Bros.