Genesis Wave

The Genesis Wave is a reality time-shift stopper that is caused by Chaos Energy from the Chaos Emeralds in the Sonic the Hedgehog comics published by Archie Comics. First introduced in Sonic the Hedgehog #225, it was used to stop the world for Dr. Eggman's use, specifically Operation: Clean Sweep. It was controlled by the Death Egg Mark 2 from Chaos Emerald energy.

When used, it can "restart" a world, specifically Mobius. This is the reason that Sonic the Hedgehog and his friends were oblivious to anything of there surroundings as, unbeknownst to them, they remember or have been to that certain place before. The Genesis Wave was used twice; both of those times affected Mobius, while the other affected the world of 20XX, which was Mega Man's world.

Operation: Clean Sweep
During the events of the Iron Dominion's takeover on New Mobotropolis, Dr. Eggman and his lackey, Snively Robotnik had went to the Special Zone in order to receive a Chaos Emerald. After one of Feist's challenges, they were successful upon receiving the blue Chaos Emerald. At once, Eggman had put the Chaos Emerald into his Chaos Emerald Chamber in the Death Egg Mark 2, and the ship began to launch. The ship went straight towards New Mobotropolis, as Sonic was fighting the crown-seeking-Ixis Naugus. When Sonic, Naugus, Sally Acorn, Miles "Tails" Prower, Amy Rose, and Naugus' apprentice, Geoffrey St. John, found the Death Egg above the city, they immediately went towards the ship. Sonic and Sally went inside the ship, and began to search inside. But, a new rebuilt Silver Sonic attack and distracted Sonic, while Sally went further into the Death Egg. However, a gun had sneaked up on her, and shots were fired. Eggman, knowing that the two approached the ship, activated the Genesis Wave and thus, Operation Clean Sweep began... (StH #223, #224, #225)