RPG
Fallout
Years before Fallout 76, the RPG's co-creator had doubts about making a Fallout MMO because it "wasn't designed to have other players"
Part of what makes Fallout games special is the sense of loneliness, that you're the only one with the weight of the world on your shoulders. That all changed in Fallout 76, but before that, original developer Interplay toyed with the idea of making a Fallout MMO, and one of the original co-creators had some serious doubts.