The Jurassic World Chaos Theory Mega Roar Allosaurus is a building toy set produced by Mattel. This set features a character known as Roar, part of the theme centered around dinosaurs. The product includes a unique vendor product number for identification and is part of the larger Jurassic World Chaos Theory collection. Perfect for fans of building toys and dinosaur enthusiasts, this set offers the opportunity to create and play with a detailed and exciting Allosaurus figure.