https://techcrunch.com/2018/07/24/knock-knock-seed-funding/

Knock Knock, a startup building games for platforms like Facebook Messenger and WeChat, is announcing that it has raised $2 million in seed funding.

The goal isn’t to build interactive chat fiction, but rather fully fledged mobile games that are accessed from messaging apps, while also taking advantages of the opportunities offered by incorporating messaging and chatbots into the game mechanics.