This game is compatible with the Expansion Pak and is displayed in a higher resolution when it is used (640x480 as opposed to 320x240).
It was later remade for the GameCube in 2002, and released worldwide as Animal Crossing. The reason it was originally released as a Japan-exclusive game was because Nintendo was uncertain whether a worldwide release for the game was viable, due to it being text-heavy and containing Japanese references and holidays that were untranslatable at the time. It was released only in Japan for the Nintendo 64. Dōbutsu no Mori ( どうぶつの森 Animal Forest in English ?), is the name of the first installment in the Animal Crossing series.