Grarrl Keno is a game of luck/chance. You pick the amount of neopoints to bet. You may select a maximum of 10 eggs (numbers), and if enough of them are the ones that hatch, you win. The maximum that you can bet is based on how long you have been playing NeoPets. You may bet 50 neopoints plus 2 for every day you have been playing Neopets.