"Mobius 25 Years Later, Part One: Tempus Fugit": The most requested storyline in years has returned with answers to the future! The planet Mobius is ruled with an iron fist by King Shadow with his chief enforcer Knuckles. Can an old friend and a kid find the once great hero Sonic, and will Sonic be the once great hero he was after all these years?

The adventures of Shadow the Hedgehog and the other members of Team Dark.

"Leak": It's good cop, bad cop as larcenous Rouge The Bat, one of the most popular and deadly characters from the Sonic games and TV shows, seeks Sonic and the Freedom Fighters' help against a diabolical new group: The Destructix! It's a battle that will put Tails' life in mortal danger! Meanwhile, Rouge has her next item to steal, and you will never believe what it is!

SONIC is SPEEDING down the Dragon Road in “Wings of Fire” Part One: Sonic and the Freedom Fighters travel to city-state of Chun-nan in search of more Gaia Keys! Dulcy the dragon is bringing all her might to help, but is her fledging team ready for end-of-the-world stakes? Could anyone really be? Then in “Homesick,” Bunnie and Tails come to the aid of a Key Guardian in a time of crisis!

Join two of the most popular new characters from Sonic's world in this classic odd-couple team-up adventure! Tangle the Lemur's got a problem: there's not enough action in her life! Whisper the Wolf's also got a problem: she's hunting down an incredibly dangerous enemy named Sonic the Hedgehog! Can Tangle and Whisper help solve each other's problems, or will they just make things worse? Also collected is Sonic The Hedgehog: Annual 2019. Join Sonic and some of his coolest friends in adventures that show just how wonderful Sonic's world really is.

"Genesis," Part One. You know the hero, you know the villain, but you haven't seen anything like this! Celebrate Sonic's 20th anniversary! It's a brand new adventure as Sonic the Hedgehog investigates the disappearance of many woodland creatures, and discovers the man behind it all! It's an all-new beginning!

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.