Sometime back in 2008/2009, Renegade Kid, the developer of Mutant Mudds, was contracted by Activision to develop another portable entry for Crash Bandicoot series. Eventually the game was cancelled, however, a video of a demo playing on the DS has surfaced recently. You may watch the video below.
Nintendo World Report
Again, huh?
Although it was just a demo it looked more promising than Crash of the Titans and Mind over Mutant. The article assumes it could have a potential sequel to the latter. If it was then maybe it's actually good it never made it to market.