Game Boy

Pokémon Red

There should be a separate game group that calls out the main RPG games in the Pokémon series - Pokémon Red, Blue, Yellow, Gold, Silver, Crystal, Ruby, Sapphire, Emerald, FireRed, LeafGreen, Diamond, Pearl, and Platinum (coming to the US soon). This should be called "Pokémon main RPG series" or "Pokémon core RPG series"

Additionally, Pokémon Red, Blue, and Yellow should be be collected as the series "Pokémon Generation I" for the original Game Boy games (which all connect to each other)