Unfailable

Unfailable is a difficulty that requires no effort, and is unable to be failed. It is represented with a grinning face in a light pink background. The grinning face is black. Surprisingly, there are only three towers in this difficulty, and one steeple. There is also a fictional tower with this difficulty, but it isn’t on this wiki.

Unknown
Tower of Lol No

Tower of Falling With No Failing

Tower of Bro Momento

Purple’s Totally Tubular Towers: Realm 1
Steeple of Absolutely Zero Effort