Favorite Pokemon Game?

Pokemon Diamond/Pearl is my favorite. After that, I feel like all the pokemon went downhill. I mean, a tractor pokemon? Seriously? I want more cute ones like Cleffa and Skitty, not a fucking automobile!
I think Heart Gold / Soul Silver is probably the best game to date. I know it's a remake of the gameboy color titles, but the updated graphics and game mechanics coupled with the vast world and game length make it the best in my opinion. For nostalgia, I'll always like Ruby/Sapphire and their remakes though.
My favorite Pokemon game is Pearl. I love it so much. It defined my childhood pretty much. I played it so often but sometimes I got stuck in certain places. XD I wasn't the brightest kid to understand what I needed to do. I don't play Pokemon anymore because I don't have the money to afford the latest ones for my 3DS.
Silver and Gold from the old Gameboy Color are my all-time favorites. These two were the last games I played using my Gameboy Color before it finally died out on me. Plus, these are the first two games (I think) that allowed you to explore a whole new region after defeating the Elite 4, and I definitely won't forget my excitement after learning that there still are lots of quests to do and unlock after the credits. At that time, I never relied on anything other than my childhood self's curiosity, so there were absolutely no spoilers from walkthroughs to "ruin" the whole gaming experience for me.
I've played almost every pokemon game (excluding spin offs and gen 6, which I just never got around to playing) and my favorite still has to be Emerald. Something about that game just kept bringing me back. A close second is probably Pokemon X, they added enough to make it distinct without changing the series too drastically. I've probably put close to 275 hours into X and countless more into Emerald.
Ruby/Sapphire/Emerald. This Pokémon generation was the one I liked the most. Everything about it was just so nice (and it still is), which made me buy the 3DS remake. What made me sad about the remake is the removal of the casino. However, overall, it is really well done.
You know, I really like the newer games. I will always hold the old ones near and dear (I started on Yellow way back when), but the new features available on the newer games like X&Y and ORAS are FANTASTIC. The thing about my childhood was... I didn't have any friends who played Pokemon. So I could never do any of the online features. Couldn't trade, battle, do the underground camps.. none of it. So now, with the amazing online features that are so easy to connect to... I love it!

Plus: Amie, Training, and all of those in-game additions are fantastic too!

Also really enjoyed Pokemon Black/White.
Platinum. It still has the best villain out of the whole series, pretty decent amount of challenge for a Pokemon game, great set of Pokemon, and lots of post game content. Still my favorite.
Ditto, plus our character gets a villa in the game which is a far cry from having to dig up some cavern and put our stuff there like a hobo ( Though I did try my best to make said cave look fancy and such:p)
One of my all-time favorite Pokemon game HAS to be Pokemon Diamond or Platinum. I spend 2 weeks trying to beat those games without any guides, google, or anything like that. I played the whole game blind, and complete it 100%.
I would say Pearl because it was my first, however I remember being infuriated with the text scroll speed, which means that my favourite would have to be Platinum. The whole underground system was amazing, I was immensely disappointed when I saw they had dropped it. People have said I missed out by not playing the earlier games, but I grew up in the age of Sinnoh and I'm glad about it.

Not to be dramatic but I really loved Gen III; perhaps it's the nostalgia factor? Sapphire was the first Pokemon game I played, after all... But nostalgia or not, I definitely loved this Gen. So much that I bought the remakes and I felt as giddy as I did when I was a child. Team Aqua is still the best Team.

Torchic was my very first starter ever, even though Chikorita would eventually become my favorite.

That said, I must admit I ended up enjoying Sun/Moon QUITE a lot, plot-wise it was simply fantastic.
So my all time favorite Pokemon game was Ruby on the Gameboy. However, since we're talking about the 3DS here, I think I'd have to go with Platinum as my favorite. I think it stayed really true to the Pokemon formula, and I really enjoyed all of the new pokemon introduced in the generation. I'm working through Pokemon X right now, and I just don't find the new Pokemon in it as compelling as I did the older games. I'm hoping that changes with Sun!
For me it was definitely Pokemon Diamond/Pokemon pearl on DS. It was just a period in my life where I really took solace in gaming from a lot of other life pressures, so I guess I always have fond memories of it because of that. It's crazy sometimes just how much a particular game can take you right back to a certain point in time. I'm sure a lot of people would say that in no way are Pokemon Diamond/Pearl the best Pokemon games ever, but to me they are!
I am 20 years old and I have about 4 or 5 pokemon games specially green and x & y, which I absolutely love playing. I really enjoy the movies and the old Pokemon shows, but I don't like the newer ones. Best of all, I love to draw the Pokemon. All I need to do is look for a Pokemon picture and draw it free-hand style (by that I mean drawing the exact same thing just by looking at the picture). I don't trace the pictures, as I don't even know how to trace. My 8 year old nephew is always asking me to draw his favourite Pokemon.
I think I am the only 38-year-old on the planet to have never even tried a Pokemon game. I saw my kids watching Dan TDM play one that looked quite cool though. It was the newest one.
I have always enjoyed playing Pokémon games. Some of my favorite Pokémon games which I have been playing for years are the following ;

1. Pokémon Sword and Shield
2. Pokémon Go
3. Pokémon Black and White
4. Pokémon Red and Blue
The very first pokemon I played still remains my favorite pokemon game , I played pokemon red and blue way back on the Gameboy Pocket version and I still can't forget the experience.
I was never a huge fan of the Pokemon games from say the 90s onwards as I could never get the hang of them so I just left those games to my brother. The two Pokemon games that I have played thought are Pokemon Go and Pokemon Unite on the Nintendo Switch. Pokemon Unite would have to be my favorite one though and it's very addictive and also a free game! I haven't played Pokemon Unite in a while but it's one of those games you can jump back in whenever and you pretty much get back into the groove.