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The Tyrannosaurus Rex is the 17th Dinosaur obtained in the Mesozoic Valley Bubble Universe, which can generate Fossil. (unlocked at Rank 26, branching off of Theropoda)

Buying the first one will trigger a cutscene and unlock the Mesozoic Glass of the Terminus Chamber in the Reality Engine. It can be found in on a hill near the river standing by Archie.

In-Game Description[]

"A bipedal carnivore with a huge head, a long heavy tail, and short forearms, the Tyrannosaurus Rex is among the best known and most popuar dinosaurs."



  • Alpha Predtor (Speed):

"While once thought to be a scavenger, evidence now shows that T-Rex was a skilled hunter, with a diet that consisted of a wide range of other dinosaurs and even other T-Rexes."

  • Brawny Neck (Payout):

"The T-Rex's incredibly thick and strong neck muscels gave it a hugely powerful bite."


  • Bipedal (Speed):

"A creature that walks on two legs, with an upright posture, is called a biped. Some dinosaurs were bipedal, including Tyrannosaurus Rex, Velociraptor, and Hadrosaur. A bipedal gait gave these dinosaurs increased speed and flexibility."

  • Carnivore (Payout):

"Animals that feed entirely on meat, or the flesh of other animals, are called carnivores. About half of dinosaurs were carnivores. With teeth specially designed for ripping and tearing, some carnivours were hunters, while others were scavengers."

  • Cretaceous Age (Discount):

"The Cretaceous (145 MYA—66 MYA) was the last period of the Mesozoic Era. Dinosaurs continued to dominate the Earth. Flowering plants first appeared during this time. This period ended with the Cretaceous-Paleogene Mass Extinction Event, when 75% of all life on Earth went abruptly extinct."


  • Hollow Bones (Speed):

"The development of hollow or semi-hollow bones gave some dinosaurs a lighter but stronger skeleton system. This development would later enable them to evolve the ability to fly."

  • Herd Behavior (Payout):

"Some dinosaurs concregated in social groups, living in loose family units for defense against predators."

  • Feathers (Discount):

"It is still unknown to what extent therapodian dinosaurs were feathered, but evidence exists that shows that at least some of them presented with varying degrees of feathery skin coverings."

  • Warm Climate (Payout):

"During the Mesozoic Era, the Earth's temperature was very warm, which led to a great amount of geological and biological transitions. This climate set the stage for the major changes of the era."


  • Thick Thighs Save Lives (75 T-Rexes):

"T-Rex had a very large head proportionate to its body, unlike smaller theropods. T-Rex's unusually powerful thighs and heavy tail helped to counterbalance their heads, which could grow up to 1.5 metres long."

  • Hail to the King, Baby (200 T-Rexes):

"T-Rex is one of the largest species of carnivorous dinosaurs we have discovered, but their predecessors were only around the size of a horse. These older tyrranosaurs developed advanced sensory perception and larger brains."

Further Notes[]

Tyrannosaurus is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex (rex meaning "king" in Latin), often called T. rex or colloquially T-Rex, is one of the most well-represented of the large theropods. Tyrannosaurus lived throughout what is now western North America, on what was then an island continent known as Laramidia. Tyrannosaurus had a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the Maastrichtian age of the upper Cretaceous period, 68 to 66 million years ago. It was the last known member of the tyrannosaurids, and among the last non-avian dinosaurs to exist before the Cretaceous–Paleogene extinction event.