Dinosaur King is a video game for the Nintendo DS that is based on the Dinosaur King anime.
Plot
One day, Max and Rex find stones that allow them to summon dinosaurs. They create Dino Shots to make summoning easy, but an evil group called the Alpha Gang steal a Dino Shot (which may have been Zoe's) where they plan to rule a dinosaur empire. Now, the D-Team must stop them.
Storyline
Reese creates a DinoShot, which will allow them to restore the dinosaurs to life, when the Alpha Gang attacks them and steals one of the DinoShots, using it to summon Tyrannosaurus. Max or Rex use another DinoShot to summon Triceratops or Carnotaurus and defeat Dr. Z and Tyrannosaurus, but he escapes. He then sends Laura and Ed out to retrieve the Stone Fragments in Europe.