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Toxic Fortress
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Game(s) Newer Super Mario Bros. Wii
Newer Super Mario Bros. Wii Plus
Level number D-Fortress
Time 500
World Crystal Caves
Enemies Dry Bones
Game Progression
Previous level (D-3) Spine Springs
Next level (6-3) Fog Cemetery

Toxic Fortress (or World D-Castlensmbw2) is the final level in Crystal Caves. This is also the final fortress level in the game. It is unlocked via completing D-3: Spine Springs and finishing that will unlock a shortcut to 6-3: Fog Cemetery. This level takes place in an underground fortress filled with poisoned water. Some of the floors/walls drop upon touch, so be careful. There is no boss in this level as with all of the lettered world fortresses.

Star Coins

  • Star Coin 1: Activate the switch before it's obscured by the poisoned water to reach the coin.
  • Star Coin 2: Before the checkpoint, quickly reach the star coin before the platform obscures it.
  • Star Coin 3: You'll need to activate the Yellow, Green, and Red Switch Palaces to access the warp pipe before the flagpole. Once inside, watch out for the spike balls and use the empty platform to reach it.


Newer Super Mario Bros Wii World D-Toxic Fortress

Newer Super Mario Bros Wii World D-Toxic Fortress