I was hoping someone had found and implemented a practical Mental Poker algorithm, since webrtc is p2p, and you usually don't want to have to trust the other parties in a p2p system.
Mental poker is a neat thought exercise, but if one of the parties drops out mid-hand, it can't be completed. If there are connectivity issues or if someone doesn't like the flop that's a huge problem.
In a serious bitcoin/mental poker implementation you could let people put up a bond that's used to pay the other party if you do that. It's not exactly zero trust anymore but still better than the conventional model.