If you think you have a good sense of time, play Spiral and challenge yourself!
The rules are simple. After you see the "go", you are given a goal that you are going to measure. When you think the time is right, tap the spinning spiral to see how good your measurement is.
A "perfect" measurement will be awarded 5 points, a "good" measurement 3 points, and a "barely" measurement will only worth 1 point --- but enough to keep you alive to the next round.
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Tips:
1. The movement speed of the spiral is randomized, so trying to count how many times it rotates doesnt work!
2. Bonus points will be awarded to a strike of perfect measures, and they add up quickly.
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Rate Spiral if you like it!