Please forgive my poor English.
Tap when "multiple of 3" or "number including 3" is displayed.
When you fail to tap or tap a wrong number, it's game over.
e.g.
Multiple of 3: 3,6,9,121...
Number including 3: 3,13,23,30,31,32...
Last updated on Jul 27, 2016
Minor bug fixes and improvements. Install or update to the newest version to check it out!