Unfortunately, Aquatopia simply doesn't engage enough to warrant a purchase. Yes, it's only $2 -- but that could easily go towards more involving affairs. What Aquavita is sorely missing as a screensaver is the ability to launch when the PS3 is idle, akin to Folding@home. That simple addition might make it far more worthwhile. Forcing the game to launch defeats its "screensaver" purpose.
Visually, Aquatopia is okay. Seeing yourself in the reflection is meant to simulate the feel of looking into glass and it works. With just a little more interactivity, like the ability to drop fish food, we would've enjoyed this experience a lot more. Just pass on this one.