"Count Three" is a game which counts for 3 seconds correctly and competes for the error (reaction time).
A reaction time is measured on one billionth of a second.
Let's challenge your limit!!
[How to play]
A touch of the STRAT button will start a count.
Please touch STOP button after 3 seconds.
In the game center, the time is displayed in the unit of a nano second. (one nanosecond is one billionth of a second.)