For me it's Diablo II. Granted I've played my fair share of D2 since launch, and also recently on a private server with a comrade from hexbear, but I still feel like years later the game didn't grab me as much as D1 did.
Granted I don't hate D2, but for a game that I keep coming back to, D1 takes the prize.
I mean it's all subjective but I personally liked the controls and I'm sad about how hard they were rejected by the masses
I do dream of a Switch port that makes them optional though, because I feel like the game itself deserves a second shot. There's a lot to like in the campaign (except for that helicopter level).
I don't want to yuck your yum there, so I'll just share frustration that Star Fox is probably mothballed indefinitely now.