The War of the World is an event that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It was a major conflict instigated by Robolactus on the future Mobius.
The War of the World came about in 3235, during which Dr. Robotnik managed to trick Sonic the Hedgehog into a rocket and jettison him into space. With Sonic―the champion of Mobius―gone, Robotnik launched a full-out war on the planet and destroyed all resistance.
As a result of the War of the World, Mobius was rendered uninhabitable for some time, forcing the native Mobians to migrate to other planets, where they eventually evolved. Products of this evolution included the Sharks, the Brass Knuckles race, and the individual members of the Freedom Fighters of the Galaxy. Additionally, Sonik eventually returned to the planet centuries later.