Stop me if you've heard this one before: there's a puzzle game that's all about matching colors, and despite how simple it is I just can't put it down. Bejeweled, Chuzzle - even Bust-A-Move. That last sentence can be applied to a myriad of classic puzzle games, and yet I'm always surprised when my breath is taken away by just one more - and Liqua Pop absolutely takes my breath away.