Is there an order to the Pokemon games chronologically?

For all of the main Pokemon games since Pokemon Red and Blue, and all the way to today's X & Y, are the games in chronological order?

I'm genuinely curious as to if there's an storyline spanning through all the games? So in this case, assuming it goes R,B,Y --> LG,FR --> Ruby, Sapphire, Emerald --> Pearl, Diamond --> Black, White --> X & Y? Or is it assumed that each game (in each respective region) happens right alongside other the games, timewise?

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2 Answers

As usual, Bulbapedia holds the answer:

(Fire) Red, (Leaf) Green, Blue and Yellow, as well as (Omega) Ruby, (Alpha) Sapphire and Emerald, are all simultaneous.

Three years later, (Heart) Gold, (Soul) Silver and Crystal, as well as Pearl, Diamond and Platinum happen.

Some time later, the events of Black and White transpire, and two years later, Black 2 and White 2 happen, contemporaneously to X and Y.

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Since playing X/Y the very beginning states that"3000 years ago, a great pokemon war" happened. There was a war in pokemon Red, Blue, Green, FireRed and LeafGreen. Therefore I believe that X/Y take place 3000 years in the future.

Then the fact that ORAS came out would disprove my theory. Since the Brendan there is the same Brendan that was in RBY and SPR. but it seems that Link from the Legend of Zelda all look the same. Or that the remakes take place in Different Universes. Since not much changed but either double battles were made or Mega Evolutions were found 3000 years early.

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