CubGG operates within the sweepstakes rules where they are legal. The Site does not permit members to wager real money and has no ability to accept deposits as it is a "free play" site only.
You can also join online clubs that will easily allow you to link up with players and earn the right to enter exclusive events. If you want to play with a group of friends too, you can do so simply by creating your own custom game. Whatever you say goes here, they play by your rules.