The Mass Effect trilogy!
It's a sci-fi RPG by the same developers that they actually made because they wanted to create another game like KOTOR, but with their own setting/universe instead of a licensed one.
What makes it special is that it was always intended to be developed as a trilogy, so there is a lot of careful pacing to the narrative, and many of the choices you make in the first game will follow you all the way into the third game. Mass Effect 1 takes a little while to get used to as it's a bit dated by now, and they're still experimenting with the gameplay a bit. Mass Effect 2 is considered a classic by many, as it has the most interesting characters and story, with Mass Effect 3 being more divisive due to some story aspects, but still offering the best gameplay of the trilogy.
The only issue is that I don't know which games you can run, but Mass Effect 1 should be fairly forgiveable as it's from 2007 (with the other games being from 2010 and 2012 respectively). But if you can give it a shot, definitely do so as it's probably my single favorite gaming experience, and you already like other games by that developer.