Single player going all the way back to atari 2600/intelli, nes and appleII. Although back then multiplayer was couch co-op and was much better than online.
I haven't played online since buying battlefield 5 for a few bucks. The last invested game for online I played was Cod WW2 (last one before the woke invasion). I used to love battlefield 2, bc2, bf3, bf4, cod 2, codwaw, codmw1/2, cod advanced war. I played for the campaign and stayed for a few rounds of multiplayer. I also loved killzone and resistance for the same reasons. It was great when you got a single player game and multiplayer in 1. Then cods got woke, battlefield choked, and their games took up 1/4 of your hard drive... I said f-off....
Last mmo i played was Connan Hyborian adventures in what 2008? Vanguard, and maybe a bit of guildwars 2 when that came out. Before that I played Everquest 2, but hated wow (my friends all played that though and I don't play to socialize). If i want to socialize I will go over to your house. I have a friend that is the opposite of me and he always is trying to get me to play online. I did a few times and it was always the same thing. Rushing to level, skipping dialog, bullshitting the hole time and I not really enjoying the game. I think he does it to get away from his wife and 4 kids... sad.
What i really love is City Builders, Turn based Strategy, Elder scrolls, Ad&D games, Stealth games, spy games, space games like Freelancer/no mans sky, racing games like burnout, motorstorm, horror games like slient hill and re2. Jrpgs of all types. Wrpgs, Srpgs, Arpgs all single player. If some goon starts mouthing how they need to add co-op to x game, I say get lost. Once they do that it waters down the game. Those survival games would be right up my alley but they are geared for groups not solo.