Ultimate Flash Sonic is an incredible remake of the classic series that started with Sega Megadrive. Select Sonic, Knuckles, Tails, or Cream to begin the game. There are also two characters that you can unlock (Amy and Shadow). Avoid enemies and collect rings to help you in this adventure side-scroller. Remember that when you are hit by an enemy, you will lose your rings, which you can still collect back. When you have no rings and you are hit by an enemy, you lose a life. Try to unlock hidden features by beating the game with different characters.