Pop: the bubbles, I see them everywhere

This is a very clever game indeed.

It's easy to play it as a relaxing experience, watching the bubbles scrolling up (or down, or across) the screen, and popping ones that you want to. There's a deep game hidden within, though, with the combo structure being the only way to reach the really high scores. In order to make a combo, you must hit only those bubbles of the same colour, not popping anything else. This becomes more and more difficult, with bubbles overlapping, and you're then left to try and get the smaller bubbles which get more points but give you less time and are more difficult to hit meaning that you're more likely to end your combo ... it get quite frantic indeed.

My only complaint is that on some of the stages two of the four colours are quite similar, which is something you don't want when you're starting to panic ...