From Hasbro: Get ready to react fast! Turn on the BOP IT game unit and get ready to Bop, Pull, and Twist your way to victory. For even more of a challenge, activate the microphone and Shout It, too! Choose to play alone or invite your friends for a game of Party Bop - you’ll all have to use your knees, elbows, and hips to win! The better you get, the more skill levels you unlock, so think fast and be the BOP IT master! BOP IT calls out commands and you reactfast! Includes Bop It game unit and instructions. 3 AAA batteries included. For 1 or more players.