Spamming a purple tsunami of bowling balls is fun.
Locating the pins by the stereo panning of their clapping sounds is next to impossible to me.
I'd suggest slowing down the apparition of new pins. Maybe limit the number of pins. Start with one single pin so people get used to the environment. Once it's knocked down, two pins appear. Then three, and so on. As it is, the soundscape is dominated by the whistle of new pins and then it's too busy with too many claps at the same time which means you no longer hear the location of each. Spamming purple tsunami ensues.