Works perfectly, can only find 1 of the light balls that came with it. But bouncy balls and table tennis balls fit down it perfectly. The light-up keyboard can be played by little hands when sitting, or by little feet when standing and dancing. Baby can use the curvy tower to pull up to standing position, then make the balls spiral out of control down the ball drop to chase. Hours of fun from sitting to standing, to...dancing! Age suitable for 9 months+