It's probably the most popular match-three game right now. And it's entertaining enough to pass the time.
There's some added modes and even unlockable modes as well, so the game doesn't get too stale, even if the concept doesn't much change. Level changes are mesmerizing with the Quantum Leap tunnels zooming you to the next locale. Music is entrancing as well, and reminds me a lot of Logan's Run or Doctor Who, for some reason.
Pretty addicting, especially trying to get those trophies. While $10 might be a bit much for some people considering the demo is about as fulfilling, our whole family can play & get our money's worth.