It's fairly simple actually, the basic idea is to create multiple desktops from a single host; fully HW accelerated and isolated from each other. So for example I could stream a game to my couch TV whilst someone else is playing a different game on the very same computer.
Personally I use this on my homelab: the same machine that has got Jellyfin (and other containers) installed can share the GPU with Wolf so that I can both transcode with HW acceleration when needed and play a game or open up a remote desktop all from one single machine.
Sounds like this is exactly what this is capable of: you run Wolf on one beefy machine, and then you connect to it from multiple clients to play games or run a full desktop remotely!