Pokemon crystal and the terrible jotho anime fillers are what killed Pokemania
https://fr.wikipedia.org/wiki/Pok%C3%A9mania>But from November 2001 onwards, with the release of Pokémon Crystal, symbolizing the decline of Pokémania, the fervor fades inexorably and dies out during the last months of 2001. In fact, being the last Pokémon game on Game Boy Color and bringing very few changes to Gold and Silver, the latter are then condemned to last in time since no major game is released before July 2003 and Pokémon Ruby and Sapphire. Pokémon gradually fell into disuse both with the first players, who had grown up, and with the mediaTranslated with
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Gen 3 didn't kill the franchise but saved it, and if you read the interviews from Masuda that's why he nealy worked himself to death for Ruby and Sapphire
