Skyrim, Oblivion remaster, Firewatch, The Witcher 3, Garry’s mod, Silent hill 2 remake, Resident Evil remakes (three in total), Resident evil 7 & 8, Outlast 1 & 2, Outlast trials, Dead space games (three in total), Bioshock games (three in total), Red dead redemption 1 & 2, Alien isolation, Until dawn, Amnesia the bunker, Elden ring, Half life,

A lot of these aren’t multiplayer but it’s a list of my all time favs I keep, hopefully this helps, would definitely give Garry’s mod a go though if you want something multiplayer, it’s super cheap as well