I love SM and USUM. I can't decide which one out of the two is my favorite though, since I like the story from SM more but the mechanics from USUM more. I also love the gen 2 games!! I adore Crystal, but you can't catch Mareep (who is always a staple on my team) so I normally just play Silver instead.

black and white is probably the best pokemon game in terms of vanilla
content BUT the gen 3 games reign supreme in my eyes because of all the
cool rom hacks that were made of those games

I really liked Sun and Moon !!

The range of Pokémon add so much variety to each of my teams!

One of my favorite teams included Decidueye, Minior, Toxapex, Ribombee, Marowak and Golem!

My favorite character was PROBABLY Mallow or Lana, they were also portrayed well in the Anime, from what I can tell! (I never watched the anime too often.)

Diamond and Heart Gold, I don't really like the newer games though.

I consider Black/White to be peak Pokémon, but I have to say my favorite main line game is SoulSilver. It was my first main line game, and it's a very good remake, so it'll have my heart until the day I die. White is also very special to me, but it can't quite knock SoulSilver out of the top spot.

Now, for favorite spin-off, that would have to be Pokémon Ranger. That was my first ever Pokémon game. I played a demo for it on a DS Lite at a Wal-Mart many MANY years ago. I immediately wanted it, so I got either my dad or my grandfather to take me up the very next weekend to buy it (can't remember who, that's how long ago it was). I followed the series while new games were being released for it pretty closely. The original is my favorite since I started with it, but Shadows of Almia is a very close second. I didn't like Guardian Signs that much, but maybe I just need to play it again...

Sword and Shield

Legends Arceus is my favorite, but Emerald, White/White 2, and Fire Red have a special place in my heart <3

id say its a tie between S\M and HG\SS, maybe FR/LG too.

red and unite

X/Y was the first Pokémon game I actually finished as a kid, but I remember thoroughly enjoying Black/White (though wasn’t “conscious” enough to understand the story line lol). Of the more recent games, I actually deeply enjoyed Sword/Shield and consider it my favorite of the modern releases! Even more so than Scarlet/Violet, which I felt didn’t quite live up to my expectations.

Currently I’m working through Legends Arceus, and it’s not as terrible as I’ve been repeatedly told XP Besides that, I’m hoping to play Soul Silver as soon as I can get my hands on a copy!

The most recent games, scarlet/violet

Blanco y negro es literal un juego hermoso y que me gusta mucho ya por la historia y por los pokemones que aparecen allí los entrenadores y mucho mass..

Pokémon FireRed will be forever in my heart ☆*: .｡. o(≧▽≦)o .｡.:*☆

pokémon FireRed 

honestly pokemon ruby has to be one of my favorite pokemon games

honestly pokemon ruby has to be one of my favorite pokemon games

I hate how easy and long these games are so I usually play Showdown kek.

Ruby and Sapphire!!!!!!

The gen 4 games, ESPECIALLY platinum or Heartgold/Soulsilver. Black 2 and White 2 are a close second

My favorite pokemon game is ultra sun for sure >_<

Pokemon Fire Red

HGSS !!! the world building in it was super cool and seeing how kanto changed over the years was super neat 2 me :33 and it included some of my fav characters too!! from the spin-offs i really like masters since i really like seeing more stuff about the human characters !! ><

all the pokemon mystery dungeon games!!!

Probably FireRed. Always found myself coming back to it when I use emulators.

Pokemon Colosseum has to be my favorite. It has great music and utilizes double battles the most effectively. All enemies have a strategy which makes it more challenging than most pokemon games. 

Pokemon Ruby, Pokemon FireRed and Pokemon Mystery Dungeon Explorers of Sky!!

Pokémon Ruby :)

Soul silver is definitely one of the best wish I had the original on Ds but I recently found a ROM fro it and played It not all the way through and loved it so sad my emulator stopped working

SoulSilver by a long shot, but White is a very close second. So many good memories playing those games!