The BIGGEST crossover event of 2013 ends here with the stunning conclusion to SONIC/MEGA MAN: WORLDS COLLIDE (part twelve of twelve)! After an intense battle, Sonic and Mega Man are at the mercy of Drs. Eggman and Wily and, to make matters worse, the evil doctors have set the final stage of their plan into motion: to use the power of the Chaos Emeralds to become UNSTOPPABLE DEMI-GODS of destruction! But look out bad dudes, our true blue heroes have a plan too—and it's "SUPER"! The history-making crossover event crashes to a close in the final chapter you can't miss! Featuring new cover art from Sonic and Mega Man art legend Patrick "SPAZ" Spaziante!

The sequel to the record-shattering Sonic the Hedgehog and Mega Man crossover is here! You saw what happened when "Worlds Collide!" Now brace yourself for when WORLDS UNITE! Dark forces have come together in the far future! The vicious conqueror Sigma has cheated death again and escaped the justice of X and the Maverick Hunters. He's crossed space and time to join forces with Zavok and the malicious Deadly Six of Lost Hex! Sonic and Mega Man could save us--but they've gone missing! Now the Freedom Fighters of Sonic's world and the Robot Masters of Mega Man's world must take up the fight to save their heroes and stop the coming tide of darkness! WORLDS UNITE features guest appearances by the cast of SONIC BOOM, MEGA MAN X and some of CAPCOM and SEGA's biggest stars! This volume collects WORLDS UNITE parts 1-4, including SONIC UNIVERSE #76, SONIC BOOM #8, SONIC THE HEDGEHOG #273, MEGA MAN #50 (includes 10 extra pages of story!) and selections from the MEGA MAN: WORLDS UNITE BATTLES one-shot, and also includes bonus materials such as creator spotlights, production art, and 21 pages of cover images. From the Trade Paperback edition.

It's the crossover of a lifetime! The team-up you've been dreaming of! Two of video game history's most iconic heroes come together for the greatest action story ever told! SONIC THE HEDGEHOG and MEGA MAN unite in WHEN WORLDS COLLIDE! It all begins with a meeting of the minds--EVIL minds! Dr. Wily makes contact with Dr. Eggman, and the two malicious mechanics conspire in a plan that will reshape entire worlds! Using the power of the Chaos Emeralds, they build themselves an unstoppable army of Robot Masters and Roboticized Masters--Sonic's corrupted friends! It's pan-dimensional panic as Sonic and Mega Man race to uncover the doctors' diabolical plot, save Sonic's friends, and brave the nightmarish landscape of the Skull Egg Zone! Along the way they gain new allies, Mega Man gains all new powers, and the stakes keep getting higher until two universe hang in the balance! You CANNOT miss this critically acclaimed crossover! Celebrated by old and new fans alike, beloved by critics and casual readers, this is one big love letter to all things SONIC and MEGA MAN! WORLDS COLLIDE collects the entire crossover event, containing SONIC THE HEDGEHOG #247-251, SONIC UNIVERSE #51-54, MEGA MAN #23-27 and material from SONIC THE HEDGEHOG #252 and MEGA MAN #28.

Sonic and Mega Man fight for their lives in "When Worlds Collide": Part Eleven of Twelve! The evil doctors Eggman and Wily have completed their ultimate battle-weapon: the Egg-Wily Machine X—Powered by the Chaos Emeralds, it is the most powerful battle machine ever constructed! As our heroes do battle, Metal Sonic and Bass join the fray! Will the combined might of the Wily/Eggman arsenal be too much for Sonic and Mega Man to handle?! The answer will surprise you—ONLY available in this penultimate chapter of "Worlds Collide"! Featuring a zone-shattering new cover from Patrick "SPAZ" Spaziante!

"A Sudden Shift." The world has fallen to the Metal Virus. Heroes, villains, and civilians have become Zombots. There's only one place left to hide and the few survivors--good and bad alike--find themselves up against a new threat commanding the Zombot hordes. Who will Sonic turn to for help in his most desperate hour? Find out in this extra-length issue!

Countdown To Chaos - Part 4 - It's the dramatic conclusion to the epic 'Countdown to Chaos' saga! In Part Four, it's a race against time as the countdown reaches its thrilling end! Metal Sonic is out to kill Sally and the Death Egg II has launched--things are not going well for our true blue hero! Can he and Tails get to the Aquatic Ruins Zone in time to save the day? And what horrifying discovery awaits Dr. Eggman? You definitely won't want to miss this earth-shattering climax of the storyline that shook the Sonic comic books to the core! Featuring the final adjoining cover in the series from artist Ben Bates.

The BLUE BLUR IS BACK from the events of “WORLDS UNITE” and ready to save the world! In “Cold Hearted,” Sonic embarks on a quest through the arctic to find and recover the all-important Gaia Keys! Collecting them all is essential for fixing the shattered world. It’s a pretty chill mission until Egg Boss Tundra steps in to put the freeze on Sonic’s plans! Meanwhile, Dr. Eggman is “Back in Business” as he braves the unknown to find his most treasured killing machine Metal Sonic! Featuring cover art by newcomer Adam Bryce Thomas!