The History of Twitch Plays Pokemon is a narrative re-telling of the most popular lore of the TTP runs.
So far the stories of the original Kanto, Johto and Hoenn playthroughs have been released, though Hoenn is still incomplete.
It is currently unknown whether or not there are plans for Randomized FireRed or Platinum.
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http://www.reddit.com/r/twitchplayspokemon/wiki/historyoftpp