A body of water, and a scale, and you've got to balance a never-ending stream of objects without anything staying in the water. Or, at least I think it's neverending... I haven't been able to finish it, but I'm not complaining.
Bowling balls, birdhouses, snowmen, and even burning-hot asteroids all have to be hung up on the scale. Most of the objects are stationary weights, but there's a few secrets here or there to keep things interesting (hmm... that bucket of water has a spigot... wonder if I can use that). A collection of constantly-moving birds only adds to the madness. In addition to a keen sense of balance, you can tilt the phone to try and keep things above water.
It's certainly not *perfect,* but if you're a fan of quirky puzzle games, you'll get a kick out of this. Certainly worth a buck.