I think it is good idea listing free games in twitch. Well, I start it (the problem is Twitch does not show all categories that you are following they...maybe in the future I will add more):
In Software and Game Development you can also sometimes find people doing gamedev with foss tools like Godot.
This should probably mention:
https://www.twitch.tv/opensource_gaming
(oh seems like the media embeding is working for Twitch... not sure if I like that.)
poVoq
Ohhh I follow this channel too.
poVoq Franzo told me last July that he had moved and stopped streaming because it's too noisy where he lives now. So you might as well go straight to PeerTube.