Red/Blue! Cant recall which I played first...
Gen 1 (Kanto: Red, Green, Blue, Yellow)
Gen 2 (Johto: Gold, Silver, Crystal)
Gen 3 (Hoenn/Kanto: Ruby, Sapphire, Fire Red, Leaf Green, Emerald)
Gen 4 (Sinnoh/Johto: Diamond, Pearl, Platinum, Heart Gold, Soul Silver)
Gen 5 (Unova: Black, White, Black2, White2)
Red/Blue! Cant recall which I played first...
Pokemon yellow