The game looks a bit tougher than the ones before, and the challenge is definitely there. I like the idea of a character select being the difficulty select, as it makes the game more accessible and replayable. Zed's been getting some flack for making their recent games payed, but it's a shallow price for the game and it's worth the time put into making the game, as well as the significant boost in quality thoughout their career. However there's one oversight that really knocks the game down a couple pegs, the fact that you can pause within a maze with no penalty to give you time to think about a quick-thinking puzzle. However I think that could be evolved from an oversight to a new character, one that can slow down the clock for a short amount of time per maze.