Rehab Lab is a cut level from Crash Twinsanity, where upon entering the Tenth Dimension, Crash and Cortex's personalities are switched, turning Cortex good and Crash evil. This level would be a reversal of Doc Amok, called Mock-a-Doc, where Crash would have to hurt Cortex to get his evil personality back and his own too. What is known about this level is that it would be the only one where you would have been able to play as Evil Crash, or at least Crash looking similar to his alternate counterpart, if Evil Crash was a character by this point in development. There is also concept art of Crash dragging Cortex into a beam in the Unseen Gallery, and there is some known dialogue at the beginning of the level.