It's nonsensical for it to be a scam

Exactly, it doesnt make sense for it to be a scam because they dont actually hold anyone's money. How much money could they legitimately run away with? It's not like an exchange where they literally hold millions worth of crypto. You send crypto when you play and you get it back when you lose. If they stop stop rolling/sending rewards, everyone is going to stop playing after 2-3 attempts that didnt work. So what could they legitimately get away with before people notice? 10k Steem? That's nothing, they make almost that on a daily basis by running the game.