Popular Playthings Roundabout Brainteaser Puzzle Roundabout from Popular Playthings is the alignment puzzle with endless possibilities Choose a challenge, then use the tubular pieces to create a circuit with no visible beginning or end Includes 18 puzzle pieces, Challenge Booklet with 50 challenges, hints and solutions For ages 8 and up Popular Playthings provides award-winning toys that encourage learning, creativity, social interaction, and good old basic fun