No way to turn off invites to friends machine, worst of all they can pop up in the middle of a bonus game and no notice saying you'll lose ALL potential winnings if you accept the invite!! I lost out on a massive epic win due to this dumb function & didn't even get the base winnings before bonus game was triggered; I'd atleast think re-entering said machine would remember what was going on OR send compensation to inbox. The party bonus games do that if you leave before it's triggered...