Pikachu Genki Dechu is the only game that will ever be translated into English that uses the N64 microphone pak. It's a little like a tamagotchi for the N64, really - you follow Pikachu around, say nice things to him and generally try to keep him happy. It's a quirky title that we can't wait to get our hands on. As yet, no name has been decided for its English incarnation (the Japanese title translates to "Pikachu is feeling fine", so we're pretty sure they're not going to use that.) Hopefully, more information to come ^_^

The N64, complete with microphone pak.