I also have some games (ex. https://que.com/insectinvasion/) and wanting to include the commenting system using STEEM blockchain so they receive something back when they communicate with other players.
Right now it is a paid games, but going to free-to-play setup. Got side tracked with other projects.
By the way, I see that you are using steemconnect haven't read the code you put up in github. Have you tried it for games using Google or iTunes?
Cheers to you and good luck with your games.
@yehey