Sonic.io is a great Free For All IO game based on a popular classic title. It is situated in an enormous ocean where you can collect tons of rings to enhance your scores and ranks. Enter that interesting online race and become the fastest player in Sonic.io unblocked! Not only that, remember to dodge projectiles for survival! Although sprinting can help you move as expected, quickly escape from every dangerous situation. Are you ready to embark on your adventure? Have fun!
Instructions: Use the mouse to control the movement, Left click to sprint