The artwork of the design is cool and is what drew me in. The number of balls and zapper bots to manage was what kept me playing. Of course when balls are flush on the floor (as opposed to perched on horizontal pillars) they are more difficult to roll around. This fact started to frustrate me. Randomness of the balls bouncing around on the rotating plate gave me the most displeasure, but eventually I did get lucky and get B to tap the win. Thanks for the play.
@nGord Thank you for your comment. Sry for frustrating you. Hmmm... may you did not play til B collect every single ball? This is very important cause this has an effect to the rotating plate. Spoiler: SOLVED !