I can’t think of anything that fully scratches the same itch. There are a lot of games that do certain things better than Skyrim, and everyone here has already recommended them. But Skyrim really nailed that immersive sim vibe. It didn’t just feel like a game I wanted to play, it is one I want to inhabit and keep coming back to.

Oddly, the closest thing I could think of that scratches a similar, but not same, itch would be farming sims like Stardew Valley or something.