Next Level adds an additional Solo Boss, a new set of Basic Mutants, and two modules that you can incorporate into the game. Heroic Mutants are super powerful mutants that replace some of the Advanced Mutants you would normally have in your Gene Pool. Orbs can be used to give an extra power boost to players that land in the Dread Zone, so they can fight their way back to the top of the Arena. Second Wave Basic Mutants give players the ability to choose their starting deck. Finally, the Zombie Horde is a Solo Boss that's designed to challenge even the most experienced Psy Captains! —description from the publisher