Zone 10: Planet 9

Planet 9 is the tenth and final zone in the second world of RapsterZeber's Towers of Hell. Since most of the towers in it are Soul Crushing they are not hidden, but the Incredible and Inevitble towers are hidden. To unlock it you need to have beaten 75 towers in the second world. There is no real lobby here, and it is just on a flat terrain since no one knows what Planet 9 is like if it is even a real thing.

Baby Towers
Remoreseless

Remoreseless

Insane

Insane

Extreme

Normal Towers
Extreme

Terrifying

Terrifying

Catastrophic

Catastrophic

Advanced Towers
Horrific

Horrific

Pro Towers
Unreal

Unreal

Citadel
Horrific - Citadel of Void: Slight Nerf

Mini Tower
Terrifying - tower.exe not found

Hidden
Incredible

Inevitable

Inevitable

Secrets
The citadel and Mini Tower are both with the rest of the Normal Towers.

Fidjo20 is standing in plain sight in front of spawn.

To reach the first hidden tower you have to reset character on the spawn pad and you will respawn in it's portal room.

To reach the second hidden tower you have to press a button behind the portal for one of the Unreal towers and then reset character and you will respawn in it's portal room.

You can corner clip from the second hidden tower's portal room into the third hidden tower's portal room.