Hydra Overlay

There could be an implementation similar to the Steam Overlay that appears in-game when you press SHIFT + TAB

Where friends and their activity could appear, if you want to add chat you could also have it, as well as the user's achievements from the game they are playing, and among other things

The Goldberg Steam emulator also has an in-game overlay where if you want you could also use it as a base

https://github.com/brunolee-GIT/GSE-Generator