too short
i compleated it with 12.1secs total
the game needs way more levels tho, high score list...for EVERY level and for the game total, moving numbers on higher levels, smaller buttons on higher levels, target times, somthing other than numbers to confuse..such as letters and you could do it on harder levels somthing like (a, d,f,h,k) so u have to click them in the order of the alphabet which requires much more thinking.