Welcome to the online game Sonic the Hedgehog. This is a great Adventure Game. The graphics and storyline are very different from that of the traditional Sonic the Hedgehog Unblocked games we all know and love. In this game, you can explore every nook and cranny in the world, discover the reason why the universe is in an advanced state of decay and defeat many villains which are sent to make Sonic sad. The action is quite fast paced and can easily become addictive once you start the adventure. The main storyline takes place around six years after the events of the last Sonic the Hedgehog video game, but it can easily be played within a week or two. Yup7 Games wishes you have fun playing Sonic the Hedgehog Unbocked Game Unblocked Free Game!