For me, it has got to be tetris. It is still thriving, even today. Anyone can understand the base concept and play it : it’s simple and enjoyable, anywhen. Plus, it runs on remotely anything.
If you really liked BG3 you might also like Neverwinter Nights 2 and DA:O. I heard there was a remaster of Neverwinter Nights 2 in the works, maybe give it a try when it comes out.
FC3 was a game changer. It was absolutely wild in its time. It’s just a shame that all of its successors went the same road… I stopper playing midgame FarCry V because it was… bad. The scenario was shit. The gameplay was shit. The map was huge but lacked substance.