It's more Toree, it's fun. The idea of replaying a stage and getting a sort of "advent calendar" treat every time you finish it is nice in theory. The rewards are pretty cool, but the actual process of replaying the level is monotonous; the only thing you really have to aim for as a player is an S-rank time, but if you're like me, you'll hit that ceiling by your second or third run, and everything beyond that will be identical. I got a C rank, a bunch of S-ranks, and nothing in between. Playing as 4 characters simultaneously was a neat challenge but the rest of the available modifiers to the main mode seem to be purely visual.