Newer Super Mario Bros. Wiki
Newer Super Mario Bros. Wii
Newer Super Mario Bros. Wii Plus
Koopa Core
Game Newer Super Mario Bros. Wii
World number 8
Levels 8
Bosses Kamek
Joined World Koopa Planet
Game Progression
Previous world (7) Sky Mountain/Starry Skies
Next world (9) Special World (?)

Koopa Core is the main section of the eighth world in Newer Super Mario Bros. Wii, with the rest of World 8 being in Koopa Planet. It is Bowser's true base within Koopa Planet.

Its tower boss is Kamek and its final castle boss is Bowser.


Koopa Core is a red-hot lava-themed cavern where Bowser is truly hiding. It is entered through a railroad and has many metal support beams sticking out of the lava. Bowser's true castle takes up its own massive room, with armies of Bob-omb defenses.

Koopa Core can only be accessed through Bowser's Castle of Koopa Planet. Bowser's Keep is the final story level in the game. Completion of Bowser's Keep and the obtainment of all 354 Star Coins grant access to a path from Yoshi House of Yoshi's Island to Red Lava of Special World.


Level number Level name Preview Description
8-Train.png Underground Railroad UndergroundRailroad.png An autoscrolling level taking place on a train filled with lava and Poison Clouds.
8-6 Volcano Rapids VolcanoRapids.png A lava boat ride through the caverns. Watch out for occasional Poison Clouds and metal crates.
8-7 Magmaworks Factory MagmaworksFactory.png An industrial level where the player must ride across the lava steadily on metal crates dropped from the production pipes. Be wary of enemies and gushing Lava Geysers.
8-Towernsmbw.png2 Pendulum Tower PendulumTower.png The player must hightail to the top of this tower because of its rising lava and enemies. Throughout, magic spells will be tossed at the player by Kamek, who is fought for the only time at the end.
8-8 Eruption Crater EruptionCrater.png A 100-second dash to the top of a crumbling lava-filled volcano.
8-9 Ironworks Forge IronworksForge.png Another industrial area full of dangerous boiling water.
8-A Dragonride Firesea DragonrideFiresea.png A Spine Coaster ride which challenges the player on collecting all 30 Red Rings without plunging into the lava below.
8-Bowsercas.png Bowser's Keep BowsersKeep.png The final story level of the game. It is Bowser's true lair, and he is finally fought at the end.

Other Buildings

Level number Level name Preview Description
8-Challengicon.png Challenge House G Placeholer image.jpg The Challenge House of World 8. It is accessible after completing Magmaworks Factory.