TinyChat Would perhaps be a competitor of Yappn, although slightly different in their functions and purpose.
https://tinychat.com/category/gaming
Seems like they've experienced rapid growth and on a global scale, here.
And yet, if you want to communicate with the company you have to do so in English?
Really?
Help! Questions and Answers
Please note that if you contact tinychat support, you MUST write to us in english. We are currently unable to respond to support requests in other languages. LINK