The keno lounge, on Robinhood Chain. Mark ten numbers, and twenty balls fall every hour. Your ticket checks itself, and five or more matches take a slice of the pot.
Mark 10 numbers between 1 and 80, or let quick pick do it. A ticket is 10,000 $KENO: a fifth is burned, the rest joins the pot.
Twenty balls, once an hour, called by whoever presses draw. They come from the next block's hash, so nobody (the caller included) can choose them. Callers are tipped 0.2% of the pot.
Your ticket sits in the very next draw and checks itself. Five matches or more wins a slice of the pot, and a perfect ten wins 60% of it.
Collect a win any time within seven draws. Anyone can press it for you; it always pays the ticket holder. After that, the prize stays in the pot.