K'NEX Beasts Alive - Chompster Building Set Build a beetle with moving body parts Includes over 130 colorful K'NEX parts and pieces Completed model comes alive as it moves across a surface Set includes 2 additional alternate builds Recommended for ages 7+ Build a beetle with moving body parts. Completed model comes alive as it moves across a surface. Set includes 2 additional alternate builds. Recommended for ages 7+.