Porcupine says hello

T-Rex the Porcupine (T-レックスヤマアラシT - rekkusuyamaarashi), known in Europe as T-Rex Begins, is an action/adventure game developed by Sonic Team (the 3DS version is developed by AccelGames) and published by SEGA.


While exploring the Bayou Swamp, Sonic and his pal, Tails, encounter an unknown beast who seems awfully familier. Sonic and Tails stayed perfectly still and didn't say a word hoping that the beast will go away, but didn't. Sonic figures out that it dosen't wanna do any harm. He pets it, but suddenly several Eggman robots appeared, but the beast sweeped them all away quickly! Sonic thanks it for saving him and Tails. They later decide to take it home and experiment it, but the beast insists that it leads them out of the swamp. Suddenly the beast spoke! It said it's name is T-Rex the Porcupine, he is Sonic's long lost cousin. Sonic froze for awhile, so Tails carried him while shocked in awe.

Nintendo 3DS version


Action Stage

Speed Stage

Flight Stage

Game Modes

Nintendo 3DS


  • T-Rex the Porcupine
  • Sonic the Hedgehog
  • Miles "Tails" Prower
  • Vector the Crocodile
  • Charmy Bee
  • Espio the Chameleon
  • Knuckles the Echidna
  • Rouge the Bat


  • PlayStation 3
  • PlayStation Vita
  • Wii U
  • Xbox 360
  • Nintendo 3DS (T-Rex the Porcupine 3D/T-Rex Begins 3D)


  • The 3DS version is made into a 3D film!