The Pokémon, or Pocket Monsters, series began in Japan in March 21,1996 on the original Game Boy with Pokémon Red and Green, with versions Red and Blue arriving in North America on September 30th, 1998.
Installments of this role-playing game are usually released in pairs, with minor difference between the two iterations, so that 100% completion can only be achieved by linking to a friend with the game and swapping the missing creatures. A third game would later be released with some alterations and improvements over the previous 2 versions.
