PowerUp!
On of my friends made a puzzle game, PowerUp!. It looked neat so I downloaded the free trial version, which only has the easier levels. But it was so much fun that I went and bought both the full iPhone version and the iPad version.
If you’re into puzzle games like Sudoku or Nicoli type pencil and paper games like Slitherlink or Yajilin, this game is for you! It involves rotating tiles to light up all the tiles on the grid. That’s all there is to it. But it gets incredibly challenging at the higher levels, especially with wrapping turned on. And games typically last 5-10 minutes, so it’s perfect for a short break. Check it out on iTunes!