So far I think there's only 1 game available, the gold mine game.
The logic of the site is you watch ads, play a multiplayer game against the another player at the same level as you are.
If you win, you double the amount of your current level, if you lose you start back at a penny.
If you win 30-times in a row, you could get ~10 mil
But I doubt that there are a lot of people who will risk it that high, most likely will withdraw around the 3 figures amount and get the money and start fresh again.
I played 1 or 2 game, it is fun, but hurts when you lost to the other person by 1 pts.