The player's goal is to befriend a wild Pikachu using a device made by Professor Oak to befriend wild Pokémon. Through earning the Pikachu's trust, the Pikachu will eventually live in the player's house. There are three different activity days, each with a different goal. The player keeps the Pikachu for 365 days. If the player reaches the 365th day, the Pikachu is released back into the wild.