It has long been known that Sonic is the fastest hedgehog in the world. Carefree Sonic loves adventures! Sonic's home is Planet Mobius, where he has many good friends. But there are also enemies. The evil Robotonik is once again preparing a trap for Sonic. His devious plan to poison Planet Mobius with chemicals is about to come true. Princess Sally and Sonic have met Grif, a resident of the secret underground city of Lower Mobius. Together they will defeat the dangerous and bloodthirsty tunnel rats created by Robotonik. The trees in the Great Forest are starting to die — Sonic must figure out what happened. Dear users! To avoid losing us, please bookmark this address: CTRL+D