Downloading your recommendations, they look very interesting and up my alley. Thanks! I'm also looking to get into Peripeteia but its pretty laggy on intel gpus which is all I got (unity?).
I am designing a much larger game with some buddies of mine at Moonbrain which is indeed a hard sci-fi immersive sim (though its not so much like SS1 but its own twisted new thing) . But the scope is too intimidating for us to attempt at this time. I consider Thetakill and a few of my other games prototypes for subsets of it. So you might get your wish, and we share the same dreams!