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!

"Dr. Eggman and Dr. Wily are evil geniuses who want to conquer their worlds, but have been foiled every time by their blue nemeses! When the power of a Chaos Emerald allows the two to meet, it's game on! It's cross-world chaos as heroes are pit against each other! The Blue Blur and Blue Bomber battle from one world to the other with Eggman and Wily laughing behind the scenes. Who comes out on top? Can the heroes come to an understanding and save the world?"--Page 4 of cover.

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.

The ALL-NEW Sonic/Mega Man Crossover sequel explodes onto the shelves with "Worlds Unite" Part Three: It’s a cascade of cross-dimensional chaos! On Sonic’s World, the Freedom Fighters are battling with the terrifying arsenal of M’egga Man! On Mega Man’s World, the Robot Masters can’t keep up with the super speedy Sonic Man! Who can possibly save our heroes? The answer is sure to surprise you! After the history-making "WORLDS COLLIDE" crossover event, Sonic the Hedgehog and Mega Man unite once more—and this time Sonic Boom and Mega Man X are joining the fray! Featuring cover art from the legendary Patrick "SPAZ" Spaziante!

The ALL-NEW Sonic/Mega Man Crossover sequel comes to a chaotic close with “Worlds Unite” Part Twelve: The grand finale to “Worlds Unite” sees our super-powered heroes Sonic and Mega Man face off against the evil Sigma in his final, most lethal form! If that wasn’t enough, the Genesis Portal-ravaged reality is falling apart and time is running out to fix it! You don’t want to miss the stunning conclusion to the biggest crossover event of the year! Featuring the worlds of STREET FIGHTER, SKIES OF ARCADIA, NiGHTS INTO DREAMS, OKAMI, GHOSTS ‘N’ GOBLINS, ALEX KIDD and more! Featuring cover art from the legendary T.Rex!