Sonic.io is an io action game where your goal is to run away and dodge everything that comes your way while collecting rings. This web game whose title is Sonic.io is honestly a nice game. Sonic.io is a sonic game. This is an HTML5 game, so all you need is a browser to run it. Controls are easy, just use your finger on mobile and mouse and keyboard on PC to navigate the game. Make yourself at home playing free Sonic.io online game at Najox.com.