GSN, the same people behind the Game Show Network on TV, have their own website loaded with games.
Most of them are free to play, with some offering in-app purchases, and give you an opportunity to collect GSN’s currency, oodles.
The real opportunity from GSN comes in the form of WorldWinner. WorldWinner is a division of GSN that allows you to buy into global online tournaments for real money.
Compete against other people in WorldWinner’s games and receive prizes based on the size of the tournament and your place in it.