Amazon Prime Gaming subscribers now have access to five new games for the month of February. Two of these can be redeemed on GOG, two on the Epic Games Store, and the last one on Amazon's own client. https://www.notebookcheck.net/Amazon-Prime-Gaming-adds-five-new-free-games-including-one-critically-acclaimed-immersive-sim-and-a-head-scratching-puzzle-game.958333.0.html
I don't see a single immersive sim on that list. I do see a linear fps with absolutely no sim elements though.