If you're a fan of awesome graphics, easy but challenging gameplay — and most of all just a good fun app — you've got to try Smash Hit. The idea is that you have a number of balls with which you'll hit objects in a sort of first-person shooter style. Physics are very much in effect here, and keep in mind that you've got a limited amount of ammo.
But hit a crystal and you get extra balls. Hit 10 (or more) crystals in a row and you'll get multiball, making things much easier. Crash into an obstacle and you lose 10 balls.
As the game progresses, crystals won't be quite so obvious, you have new obstacles to overcome, and overall gameplay begins to speed up. Be sure to turn up your speakers, too, as the music is synced to the gameplay and changes as you progress through the 50 rooms.
Smash Hit ties into Google Play Games (as any good game should). The game's completely playable in its free form, but a $1.99 in-app purchase adds the ability to restart from checkpoints, and provides cloud saves and statistics.
Absolutely give Smash Hit a try.
h/t to Eric Richardson for this one!