Funny game even though it's more of a simulation than a game but it at least has a future in gambling machines! Jokes aside, I liked it, it was short and respected well the limitation. My only advise would be to ensure that one of the ball will enter the cup fastly enough on the next stage because it took like 4m for me. 
Have a nice day!

Fun game, but purple wins most of the times. Is that scripted

The concept is great. However, sometimes it takes ages for the balls to get to the cup. Looking at them is fun for a few seconds, but then it unfortunately gets boring.

There is a button that controls when those "2" balls will start to race.

It would be nice if you told us which button :P