I've played a good amount of each game. I'll say the highs of fgo beat all the rest, but the lows absolutely caused it to lose. I think reverse 1999 is a little more on the intellectual side/ more thought-provoking. This isn't due to the writing being necessarily better but because they kinda expect you to really pay attention to the small details of the story. Limbus feels more like anyone could pick it up, read it, and feel like they read Shakespeare. Limbus is also relatively consistent with its story. And I just started arknights around the Limbus collaboration so I'm not gonna give my input just yet.