The Unused Uka Tree Level is a cut level in Crash Twinsanity where Nina must climb a large tree while avoiding missiles from a blimp that has N. Gin's head. It can be seen in the concept art of the game. The level eventually made its debut appearance in Crash of the Titans.
A notable feature is that Nina is grappling onto a lizard, which would be the original item for Nina to grapple on. Another feature is that a cut plant enemy is walking on the platform below Nina. Note that Rusty Walrus is hanging from an anchor coming from the blimp/hot air balloon.
- This would have marked the first time Nina set foot on one of the Wumpa Islands.
- And also Rusty Walrus, N.Gin and Uka Uka to be on one of the Wumpa Islands.