After Crash Tag Team Racing was transferred to Radical Entertainment, Traveller's Tales Oxford began working on their own game starring Cortex. They put forth several proposals, but were not given the go-ahead to develop any of them.

Prospective titles were "Cortex Chaos" and "The All-New Cortex Show", and gameplay may have involved him ordering clones or robots around, similar to Pikmin. Cortex would have been kicked out of the Evil Scientist league for "fraternizing" with Crash during the events of Twinsanity, and the other evil doctors, led by N. Tropy, would have been the primary antagonists.