I've been on the fence between choosing one of these 2 games. Right now, Collapse! Chaos has a sale (1.99) so i'm hoping to make a decision soon. I've seen that Collapse! Chaos has a quest mode, which would seriously make it more fun, but the unavailability of making the blocks come up faster (in rising blocks, a tap of the up arrow on the left makes it go up) has made me think twice. Any opinions?