A free app for Android, by Dexus Dinosaur.

Hybrid Arena: T-Rex vs Spino is an action-packed game for iOS. This time, the two greatest and deadliest creatures of all time have been given the opportunity to fight for dominance. The Spinosaurus has come to dominate the whole world and will not hesitate to destroy anyone or anything in its path. The only way to stop this deadly force is by taking control of the entire world and defeating the Spinosaurus in a one-on-one combat.

You will be able to play as either the Spinosaurus or the T-Rex, the king of all dinosaurs. This will allow you to select the most appropriate strategy for each fight.