Offline single player games are chillin right now. AAA games like God of War or Last of Us have the epic, cinematic games covered. And there's a ton of Ubisoft-tier open-world "rpgs" coming out all the time, like Horizon: Forbidden West (which is one of the best in this category). I'm pretty sure that any FromSoft game can be played offline with no trouble. And that's not even mentioning every indie game ever. Almost all of them are singleplayer because netcode is hard and maintaining servers requires constant monitoring. The real question is whatever happened to splitscreen? That -blam!- used to be mandatory in every game that came out, it felt like.