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.

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.

Dr. Eggman and Dr. Wily are locked inside their flying fortress-the Wily Egg! Inside are all manner of powerful defences, including Metal Sonic and Bass! Outside is an army-almost every Robot Master ever made. Dr. Light's life is on the line and two worlds teeter on the edge of destruction. Enter Sonic, Mega Man and an army of their own! Sonic's friends join Proto Man, Rush and Duo in an epic all-out battle to break through to the evil doctors, rewrite two realities and save their home worlds! It won't be easy, but Sonic and Mega Man have a knack of overcoming the impossible.

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! Sigma--the brilliant villain from the future--has fused the worlds of Sonic the Hedgehog and Mega Man together! Now he feeds on the super-planet's energy to become unstoppable! It's up to Sonic and Mega Man to raise an army to fight the time-hopping villain. Joining them are the Freedom Fighters, the Robot Masters, X and his Maverick Hunters, Sticks and her friends, and--Dr. Eggman and Dr. Wily?! But it won't be easy, as Sigma uses his powers to reach across space and time to recruit an army of his own! It's a battle of epic proportions to save the Unified World! Featuring the introduction of the STREET FIGHTER cast, including Ryu, Chun-Li, Guile and Ken! This volume collects WORLDS UNITE parts 5-8, including SONIC UNIVERSE #77, SONIC BOOM #9, SONIC THE HEDGEHOG #274, MEGA MAN #51 and selections from the MEGA MAN: WORLDS UNITE BATTLES and SONIC THE HEDGEHOG: WORLDS UNITE BATTLES one-shots and includes bonus materials such as creator spotlights, production art, and 16 pages of cover images. From the Trade Paperback edition.

Get your first look at the crossover event of 2013 here! Before worlds collide in Mega Man #24, check out this digital-exclusive FREE preview! Get a recap of the events leading up to the crossover, see some amazing upcoming covers by Patrick "SPAZ" Spaziante, and get an exclusive first-look at some of the interior artwork from Mega Man #24! Get ready, folks-it's Blue times TWO!

"Worlds Collide," Part One. The crossover event of 2013 starts here! The Mega Man/Sonic the Hedgehog epic kicks off with a bang as the Blue Blur and Blue Bomber meet for the first time! And considering how hard they're fighting each other, it might be the last! Why are the heroes trying to take each other down? Drs. Eggman and Wily know, and they're loving every minute of it! You cannot miss this historic first meeting of two of the biggest video game icons in the entire world!

Blue Blur and Blue Bomber meet for the first time in the crossover event When Worlds Collide! Dr. Eggman and Dr. Wily have crafted a twisted pocket dimension-the Skull Egg Zone! Sonic, Mega Man, Tails, Proto Man and Rush have found their way into the zone, but how will they find the Doctors in this nightmare world? To make matters worse, Sonic's friends have been turned into the eight menacing Roboticized Masters! Can Sonic and Mega Man overcome these fearsome robot warriors? Can Sonic's friends be saved? And what new weapons can Mega Man gain from this fusion of Eggman and Wily

The historic Sonic the Hedgehog and Mega Man crossover event rolls on! “When Worlds Collide,” Part Seven of Twelve. The hunt for the Roboticized Masters continues as Sonic and Mega Man face down Shadow Man and – Shadow Man? Meanwhile, Drs. Eggman and Wily gloat over the captive Dr. Light. But what is the brilliant, bearded scientist preparing to do? Featuring stunning new cover art from Patrick “SPAZ” Spaziante!

There are so many epic battles in the SONIC/MEGA MAN crossover event that the biggest brawls of the bunch have exploded into their very own book! This extra-special bonus issue features exciting duels spilling over from the pages of the much-talked about “Worlds Unite” event, and feature an all-star cast of creators! Watch Mega Man bring the ruckus to the Deadly Six, the Maverick Hunters ultimate showdown with Vile and Dr. Light’s Robot Masters tussle with the unstoppable power of hero-turned-uber-villain Sonic Man! LET’S GET READY TO RUMBLE!

ALL-NEW DIRECT MARKET-EXCLUSIVE special! There are so many epic battles in the SONIC/MEGA MAN crossover event that the biggest brawls of the bunch have exploded into their very own book! Twelve issues just isn’t enough to contain all the frantic action of “Worlds Unite!” The action spills over into this second special stand-alone issue where an all-star cast of creators bring you an extraordinary all-action issue! Watch as Sonic battles the Deadly Six, Knuckles throws down with Break Man, and Sticks… goes after Roll?! LET’S GET READY TO RUMBLE!