I dont know if this was already posted but well anyway:
Pokémon Red and Pokémon Green were introduced in Japan on February 27, 1996. These where the first games Nother america got Red and Blue. The point of the game was to get all gym badges and beat the pokemon leage or
"elite four" Your first pokemon is known as the "starter" You could have Charmander,Squirtle or Bulbasuar.
What ever you picked your rivel pick the the one that could beat your yours
Bulbasuar= Charmander Charmander-Squirtle Squirtle-Bulbasuar.
Team rocket: They are the "bad guys" that steal pokemon and try to take over Kanto there more annoying then they are a chalenge.
There teams are mostly ekens,arbok,zubat,golbat,drowzie,hypno.
As a "add on" there was pokemon yellow where your started was pikachu by default just like ash in the show. You would get a eevee but your "rivel" takes it.
after you beat the game you could capture mewtwo. the "Legandary trio" was: zapdos moltres articuno!
Pokemon gold and silver where the sequils.And first released in Japan in 1999. They were later released to the rest of the world in 2000 (Australia and North America) and 2001 (Europe). They took place in johto with the same meaning as blue,red,green, and yellow. The diffrence was 150 (i think) new pokemon and another diffrence was a leganedary pokemon ment for the gane you played
gold- Ho-Oh
Silver- Luiga
But unlike R/S/D/P you could get then in both games!
And a new lehandedary trio! Raikou,Entai and Suicune.
Celabi and mew are pokemon you can only get with gameshark or a ingame glitch.
Like yellow there became Pokemon Crystal!
There was a new way to get Suicune. And you could still get both Luiga and Ho-oh and both at lvl 70! ( in silver and gold the main pokemon on the "box art" was the one that would be lvl 40 the other one would be lvl 70)
Ruby and sapphire!
These became the second sequiles with new pokemon and new place to explore 2 new legandary trio! ( regice,regirock,registeal, Rayquaza kyogre, and groudon!
sapphire you could get kyogre ruby you got groudon rayquaza in both games! Theh like yellow there was emerald. You could get kyogre and groudon both at lvl 70 instead of 40 and a new champion and new 8th gyn leader!
ruby: team magma was bad
sapphire: team aqua was bad
emerald : were both bad!
Diamond and pearl!
There are now diamond and pearl. Each with there own main pokemon. And full of leagandry pokemon! I think there is 3 legandry trios and there could be more once you mix and match diffrent leagandrys
now there is platnium same thing were emerald you could get all legandrys. But with my people!
ex: "Looker" you can get the battle recorder and get the key to change rotom and shaymin in skyform
More edits will be made
more info,grammer,spelling, Well hope you enjoyed
edit 1: Kanto legenarys: Zapdoes,Artiuno,Moltres.Mew,Mewtwo
pokemon in the are thought to be legandary: Dragonite he is at the top of the pokedex with the legandarys
Johto: Entai Raikou suicune Ho-ho Luiga Celebi.
Pokemon that are thought to be legenadry: tryranitar he is like dragoanite at the top of the dex
Hoenn: Latias (sapphire) latios(ruby) ( In emerald you can pick by saying "RED" or "BLUE" you can get the other one b mixing records with the game that holds the other lati then useign the "Eon ticket" to get to the other lati)
Regice. regirock,registeel,Groudon(ruby and emerald)Kyogre(sapphire emerald) Rayquaza(Both) deoxys (normle form in R/S attack in emerald you must go to a event to get hte aura ticket) Jirachi( transfer him from pokemon colosseum bonus disc to ruby or sapphire then trade to emerald)
Thought to be legenadry Metagross and Salamance are with the legenadrys in the pokedex
sinnoh: Darkrai ( Must get the members pass event or go to the event that trades darkrai to you)
arceus ( Right now you can only get him though action replay hack or azure fluit or mod code)
cresselia: You must go to he island to help the sailors sun in canalvine city yoy will go to newmoon island where you will see her and she will run away like the latios ect
Azelf,mespirt,uxie mespirt is lik cresselia
You need to stop team galatic at mt cornet then you can go to there lakes and catch them.
manaphy: Beat Pokemon ranger and trade the egg over to D/P
phinoe: Breed manaphy
Palkia (in pearl and platinum) dialga( in diamond and platinum)
heatran: after going through Mt stark with a partner you can go back and catch heatran ( heatran can be a male or female there is a 50% chance male 50% female)
Regigigas: After migrating the regis to pearl/diamond you can go to the temple in snowpoint talk to the statue and battle him
Giratina: in spring path after you beat the game he is at lvl 70 in platinum he is 47 and in the flip world
thought to be legenadry pokemon: Salamance is up there with them