The coin pusher is the whole engine

Drop a coin in. Watch it tip the pile. Walk away with tickets, small prizes, quest items and the occasional collectible card. Then the pile settles into a slightly different shape and you have a new angle to think about.

The pusher keeps ticking over while you are doing other things, and it always has the next prize you need sitting right there on the edge where you can see it. Tickets fuel your drops. You earn them through play, or top up with a rewarded ad.

Every other system in the game eventually routes back through here.