--- HOW TO PLAY ---
Rule1: When the target time of each stopwatch is reaching, quickly tap them with minimised deviation.
Rule 2: You can enter the next chapter only when you managed to restrict the total deviation of all existed stages under threshold.
Rule 3: Use "Crystal" to slow down the time, use "Tape" to kill one stopwatch with deviation of zero.
There are many different types of stopwatches: The Bombs, Thunders, Invisiblettes, etc. Try to find and beat them!!