Pokémon Crystal is the sixth main series game (seventh in Japan), the third game of Generation II and the updated version of Pokémon Gold and Silver. Crystal gained notoriety as the first main series game to feature animations for Pokémon, and has a unique storyline involving Suicune. It was also the first Pokémon game to feature a female playable character, Kris. Crystal was the only main series game exclusive to Game Boy Color. Crystal has infrared connectivity to the Pokémon Pikachu series of pedometers, which utilize the mystery gift feature to give the player items based on steps taken and points earned.