You can play Sonic.io free online free games at Cool Sport Games. It has tags: .io,2d,Avoid,Html5,Sonic. It has 168 total plays and has been rated 0% (1 like and 0 dislike), find the fun and happy day. We find some of the game: Combat Online, BLOXcalibur, War Brokers (.io) and Agma.io. To play other games, go to the .io games page, the 2d games page, or just check out the new games or best games page.