A polished but spare little game that digs at the perfectionist impulse of speed running for its core gameplay mechanic. You have 10 seconds to destroy all the enemies in each level, and the key to "solving" each level is to find the most time-efficient path of slices and shurikens to shave seconds off your time. It's very easy to complete the levels - I finished all of them in around 20 minutes - but the real challenge, and I think the real meat of the game comes with the agonizing streamlining of each stage, so that you can get those three stars needed to unlock the bonus worlds. I don't really care for minmaxing in games, so this just wasn't much for me. Looks and plays nice though!