Alright, I got some catching up to do.
Donkey Kong Country Returns is something I actually didn't play until recently, but I had a ton of fun with it! I do like Tropical Freeze more, but there's still a lot of creativity in those levels and it's, in my opinion, the perfect difficulty for a 2D Platformer of its kind.
I always go back and forth on what my favorite Pokemon games are, but HeartGold and SoulSilver are always in the conversation. Gen 2 was already one of my favorite gens, so having the Gen 4 DS aesthetic with those towns and those characters just ends up being some of my favorite vibes in Pokemon. Plus, post-game content in Pokemon is a big thing for me, and there's a lot to go through here, even beyond the second region. I also have a lot of nostalgia for how much I played this game with my friends.
And of course Super Mario Galaxy 2 is up there for me. I haven't actually played either of the games in a while, so I'm not sure which I prefer, but Galaxy in general is just such a masterclass in a lot of regards. The mechanics feel great, the music is great, the level design is great, it's just all very great. I do prefer the setup to the first game more though, I always agreed with Bosman's take on the tiny Mario head ship and just having a world map instead of exploring the observatory.