TouchArcade writes: "Puzzle Prism [App Store, $3.99] a Tetris variant in which you are dropping blocks onto a rotating 2×2 tower. Fill a level completely to clear it. Let the tower grow too tall and you lose. A simple formula, but one that is implemented very well. The soundtrack is solid, the controls work well, the game has a satisfying feel, and I find myself going back to it regularly."