FireRed/ LeafGreen

FireRed and LeafGreen are the remakes of Red and Green. (Green was only released in Japan) These feature 150 different Pokemon (Kanto Poke'Dex) and perhaps Mew? Mew can only be found by following the game to a certain point in a certain way. Confusing, but they may actually be knocked out of a truck by the SS Ship. So if you bought LeafGreen and can't get Mew now, try buying FireRed and following the directions. You can find the directions on most sites.