Prior to this generation I would have said Donkey Kong. The Donkey Kong Country games are some of my favorite games 2D games of all time. I'm actually going to go with Fire Emblem, which I didn't play a game in the series until the Switch. After playing Three Houses I went back and played a bunch of the older games and really enjoyed the games. I've always avoided Kirby games, as they looked too kiddy to me, but I've had a lot of fun with a few Kirby games on the Switch. I really enjoy the Luigi Mansion games, and the old Wario 2D games like Shake it and Wario World. Star Fox 64 blew me away back in the day. I didn't have the PS1 so all the cinematic, voice acting and the rumble features were incredible. Saying all that Fire Emblem is my next favorite game series after Zelda and Mario.