The developers find all kinds of methods to bait you into buying coins. Charging your pool stick with coins?? Why the heck do you have to charge your pool stick. They setup bots to play against you so you'll lose no matter what so that you'll run out of coins so you'll buy. I've never bought any coin but I've tested this. Once you have a million coin, try to play all versus other players. You'll end up playing against bots. Bot can make shots that are blocked or impossible to make.