Only sign up if you're getting free credits to use! There's a "free play" of one game per day, it's two sessions of a pre-chosen game. Today, I went to click on it, and I didn't notice that the link sent me to a game that was a paid betting game there was NO LINK for the free play rounds. So now I just lost money because I most likely lost the round I didn't know was a betting round. They'll scam you out of money so DO NOT put your credit/debit card info in there EVER! I tried going on the app to do the free play and it's been the same g*dd*mn game three days in a row now! I'm getting sick of having the same free play game over and over! The scores are definitely rigged. People get impossibly high scores which you could only do by altering your computer settings, WorldWinner "claims" that it can detect things like that, but I call BULLSH*T! DO NOT waste your time! I've been on this site for a few years now, still have never cashed out, and have only accumulated, at the highest, around $7 but lost most of it through paid game rounds. Maybe if you're good at getting away with being shady, this site is for you, otherwise, stay away!