I'm hosting a Twitch Plays for Maze Burrow, a Sokoban-inspired puzzle game I'm developing with MonoGame. You can join in and play the game directly through Twitch chat on my channel now: https://www.twitch.tv/kimimaru4000
This is a demo build consisting of the first 20 levels of the final game, which will be released later this year. I also wrote the Twitch bot running this stream, which anyone can use for free (free both as in freedom and price).
This was accomplished using vJoy, a virtual joystick for Windows, and feeding inputs to it through Twitch chat with the bot. SDL has vJoy in its controller database, and Maze Burrow reads its inputs using MonoGame's Joystick API. This technically means that every DesktopGL MonoGame project has Twitch Plays support out of the box; pretty neat!
I hope you all enjoy the stream!