"When Neo Metal Sonic--an evil robot with Sonic's speed, Dr. Eggman's intellect, and an unbreakable mechanical body--conquers the island to grow his power even more, Sonic and his friends must team-up and take the fight to him. But even with the full power of the Resistance behind him, will Sonic be able to take down Neo Metal Sonic once and for all?"--Provided by publisher.

"The thuggish twosome, Rough and Tumble, are back and they're looking for vengeance against Sonic and his friends. And they're not the only ones ... some of Sonic's greatest foes have returned and, with the help of some new evil allies, have created a threat that's guaranteed to take over the world. Even Sonic can't outrun a Virus for too long."--Amazon

"The world has fallen to the Metal Virus, a manufactured plague that transforms all it infects into robotic zombies at Dr. Eggman's command. Even Sonic the Hedgehog has been infected, though his speed has allowed him to keep the virus at bay. Now, with the population more infected than not and the virus constantly spreading, Sonic and his friends in the Restoration launch a desperate plan to cure the world... but when things go awry, it all comes...

"Join Sonic the Hedgehog, Miles "Tails" Prower, Knuckles the Echidna, Amy Rose, Mighty the Armadillo, Ray the Flying Squirrel, and even more special guests as they travel through zones inspired by the seasons in search of Chaos Emeralds! It's a hilarious and hectic race against the clock"--

"Sonic learns of Dr. Eggman's whereabouts, but when he finds the villain, Sonic discovers not only a reformed man that can't remember any of his past crimes, but also an old rival"--

"ROAD TRIP!!! Sonic's friends hit the pavement for some much needed RR after months of constant excitement, but a hero's work is never done! Amy, Jewel, Tangle, and Belle are heading off on a well-deserved camping trip. Between Dr. Eggman, Dr. Starline, and the Deadly Six, life has been stressful, so they're hoping to get a little peace. Unfortunately, a dangerous wildfire has other plans. Can our heroines extinguish the flames--and the group tension--before...

"Rivals, fakers, and doppelgängers have been scourges to Sonic for years, but Dr. Starline's newest creations pose an entirely new threat. New challengers Surge and Kit were designed for a single purpose: to replace Sonic and Tails as the world's greatest heroes! And that means it's not just the Blue Blur and his friends who should be wary--Dr. Eggman better watch out too! But has Dr. Starline gone too far this time? Will his master plan succeed,...

In the aftermath of his latest battle with Dr. Eggman, Sonic and his friends must defend small villages around the world against robot attacks.

"A stormy night. A plane crash. A deserted island--or so it seems. Sonic and Tails find themselves castaways, surrounded by robots hardwired to target them! That's no island--it's the weathered hulk of the Death Egg, and it's crawling with scrapped, rusted, and malfunctioning Badniks! Each and every one of them was created by Eggman to destroy that meddlesome hedgehog, but the mad doctor left other creations as well. Lethal, personal, familiar creations....

"When the defeated Dr. Eggman's robotic forces regroup and begin attacking villages around the world, Sonic and his friends race to the rescue."--Amazon.com In the aftermath of his latest battle with Dr. Eggman, Sonic and his friends must defend small villages around the world against robot attacks.