gambit.com is PvP boardgames
gamerholic.com has tetris and another arcade game. I've played on this site for a while, it is extremely buggy, I'm not going to lie. However the payouts are good and customer service is great, so if you encounter a problem, they will fix it. I put in 1mBTC and turned it into 20mBTC in 4 or so hours. They payed out