Sonic is here with an online version of the game called Ultimate Flash Sonic! Enjoy it now at Friv! Choose one of the famous characters (Sonic, Tails, Knuckles, Cream) and experience an awesome adventure. Use your arrows to run, press space bar to jump, hold space bar to fly. Jump onto various bouncy objects which will either make you run faster or launch you in the air. Collect golden rings along the way to increase your score. Try to be as fast as possible. Your time and score are displayed on top of the screen. Can you complete all levels of the Ultimate Flash Sonic at Friv?