First Pokémon generation

The first Pokémon generation of games includes Pokémon Red and Blue, and in Japan, Pokémon Red, Blue, and Green, among other spin offs. It is the first of currently four generations of the series, and featured 151 Pokémon species. It should also be noted that a remake of the games mentioned above for the first generation titled Pokémon Yellow.

Starter Pokémon
All main Pokémon games feature three starter Pokémon that you can choose from. The one that you choose will generally be your main Pokémon that you use.