MythTV is the magic word. At least it was ten years ago when we were still watching TV. It comes with server and client packages. Kodi can also serve as a client. You can set up automatic recordings, timeshift, it can serve other videos and music. It’s great.
Gothic 1 was designed without mouse controls in mind. A fact that made it clumsy to control even back when it was new. But for this it’s great. You can play it comfortably with one hand on the keys.