A game which'll never get you bored!
I absolutely loved playing this game but I cut two stars because of the following two points:
1) No medals. Hence, every level/marker passed did not make it anymore rewarding than our effort; and
2) The game restarts from the beginning once the browser closes. It gets pretty inconvenient if one needs to restart the computer or turn it off for the night.
All in all, a almost-perfect game!
Loved playing every second of it as it's incredibly reflex-challenging.