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K'nex Vertical Vengeance Coaster
( KNEX $59.99 Score: ) Here is the latest twist on a K’nex roller coaster. This one is over 5 feet high, with a motorized chain lift that takes two cars to the top—where they zoom down the loops and spiral turns of 33 feet of track. Our crack K’nex testers gave the directions very poor ratings. Ages 10 & up. For younger K’nex builders, Light ups! 30 Models Kit ($29.99) looks challenging with rods that light, but not available for testing; also Gear Action Building Sets ($29.99 3) that have gear-driven motion; these work, but directions are not clear. 7 & up. (800) 543-5639.

Age: Later School Years. Review Published:

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