Unlike a real mouse, this toy version actually wants to be found. And little ones will have a blast searching for it. One person hides the mouse and the others have to find it. The mouse makes little sounds at first but then they get louder and louder. Kids delight in listening and using their investigative instincts to locate it. Requires 2 AAA batteries (included). Ages 4 and up. For 2-10 players.