Pokémon is also the collective name for all of the fictional species within the Pokémon universe. To date, the franchise has a grand total of 720 Pokémon that lie at the heart of the series, a figure which has grown substantially from the 150 monsters in the original Pokémon Red and Blue games. The word Pokémon remains unchanged whether referring to the singular or plural (as is the case with deer or sheep), and the same applies to each species name.