I'm between games at the moment, so I'm revisiting old favorites: Factorio and Hitman
I've got something like 170 hours in the modern Hitman trilogy over the years and still enjoy coming back to it sometimes. The only thing that comes close to it in the stealth genre is the Dishonored games.
Likewise Factorio: over 300 hours and the core loop is still so satisfying -- can't wait for the DLC, though
I was playing Baldur's Gate 3 but I'm burnt out on it at the moment. Combat is relentless in that game...