David Tzur's SpinIn, also available for a fee on iOS with extra levels, is a familiar sort of puzzle game where you drag pieces around a board to try to clear a path to remove one specific piece... in this case, a diamond. The catch, however, is that when you move, all the pieces on the board not locked down move at the same time in the same direction, and they don't stop moving until they hit something. You can take as many moves as you like to complete a stage, though obviously if you do it in as few as possible, you'll get that all-important perfect rating. Use [R] to restart, and [U] to undo your last move. Chances are you've seen variations on this puzzle before, and while SpinIn doesn't break the mould, it gives it a little twist that keeps you thinking as you puzzle and slide your way through the stages. The levels are rarely elaborate and usually have just a few pieces at a time, so they always look easy, but are trickier than you think. Though it doesn't have any real bells and whistles to speak of, SpinIn is a simply satisfying little puzzle game for on the go or in your browser.