Rio Rex is another part of the popular Tyrannosaurus Rex fighting games series at Friv. This time the goal is to cause chaos in Rio de Janeiro, the biggest city of Brazil! Control your dinosaur, kill every human around and destroy all objects standing in your way! Eat pedestrians, bash buildings and take down helicopters to earn points! Find up to 3 hidden skulls in each of the levels for a higher final score. The game offers 16 challenging levels in various areas of the Brazilian city. Use W,A,S,D keys to move, use your mouse to aim and bite, click and hold to spit flames. Press your F key to activate full screen. All necessary info such as your remaining health and current level is displayed on the top and your current level’s score at the bottom of the screen. You can see your overall score of the game on the levels window. Can you help your T-Rex destroy every object of the city in this super cool Friv game online called Rio Rex?