Last kids on Earth

"After a monster apocalypse hits town, average thirteen-year-old Jack Sullivan builds a team of friends to help slay the eerily intelligent monster known as Blarg"--

"Jack teams up with the evil King Wretch in order to convince his friends to stay with him instead of going in search of others who may have survived the monster apocalypse"--

Surviving their first winter after the Monster Apocalypse was no easy feat, yet Jack and his buddies waste no time springing to action against some of the nastiest, most evil monsters around. When Jack discovers his Louisville Slicer has new, otherworldlypowers, he's thrown into epic training to find out what kind of destruction the blade can wield. But between fighting off zombies, fleeing from strange, glowy Vine-Thingies erupting from the ground,...

"The last kids may have escaped the forbidden fortress by the skin of their teeth, but there isn't much to celebrate. Thrull has what he needs to complete the Tower, Rezzoch will most certainly come to Earth, and the world as they know it will cease to exist. Except Jack's Cosmic Hand is now even more powerful than he realized, and it might just be able to stop the inevitable from happening. To get the answers he seeks, he'll need to travel farther...