Nothing in life is so perfect that it can't be improved with the addition of dinosaurs. Imagine Jurassic Park without dinosaurs, or Dinosaur Comics, or your wedding day, for just a few examples. See? Everything is better with dinosaurs.
Orion: Dino Beatdown understands this principle perfectly, adding vicious dinosaurs to an otherwise standard class-based shooter. The above video explains how each class can best take down the dinos – but really, it's not as if there's a bad way to play a game with dinosaurs in it.