Finally, there's a chess game.
I have read last time that some people talk about chess game's integration with gambling. I will appreciate it if you will allow visitors to view the games without registration.
I guess you can try it but how can you play chess if there is no other players to play that game?
You need to invite other players to play with you don't need to register base on what I check you just need to have user name and you are free to invite friends after that.
I don't know if they accept bitcoin or their tokens I just see it but never try.