Bits and Pieces - Whack A Mouse Table Game - Classic Arcade Game for Your Home - Provides Endless Fun Give these mice a good bonk on the head with the rubber hammer when they light up. But you'd better be quickwhen the light goes out, you've lost a chance to score a point! A wonderful christmas gift. Requires 3 "AAA" batteries, not included. Measures 8-1/2" x 6". Recommended for ages 3+