I am looking for something which u can selfhost and have a web UI or client where u choose the game and launch it. Edit: Something open source would be great!
It depends what you are looking for. Your description is actually kinda confusing.
Do you want something to allow the install of games from a self hosted server? Then you’re looking for https://gamevau.lt
Do you want “one launcher to rule them all” that allows for local aggregation of all available games from all platforms? Then you’re looking for https://playnite.link
Do you want a front end for game servers? Then you’re looking for https://pterodactyl.io or https://cubecoders.com/AMP
Do you want something else? Give us a little more info and we can likely point you in the right direction.
you mean https://gamevau.lt/?
I guess you want cloud streaming, like Google Stadia?
There are not many options there, but this seems the closest:
https://github.com/giongto35/cloud-morph
https://github.com/giongto35/cloud-game (for emulators)
Pterodactyl is probably the closest I’ve personally seen to what you’re looking for.