Countdown: At long last, an extraterrestrial civilization reached out and made the First Contact. The end of their message showed humankind how to access a mysterious game. But as people figure out this mysterious game, the countdown timer ticks away. And no one can say exactly what will happen when Earth's safety is no longer guaranteed.

Fight, survive, adapt, and rely only on yourself. That is Derek’s creed and what's got him through the System Integration on Earth. Everything changed when the System came. Cute bunnies and beautiful butterflies became savage killing machines. Then the Invaders arrived with a single goal: to obtain ownership of this new habitable planet. War has raged ever since. None of this mattered much to Derek, aside from making living a little more perilous.

Jack Rust was a disillusioned biologist with a PhD—almost. When an extraterrestrial AI calling itself the System invaded Earth and thrusts it into a world of aliens and violence, the least Jack hoped for was gaining access to magic.

As a martial arts instructor, Nori has always had a simple purpose in life: Help underprivileged kids build confidence and self-discipline. Now she'll have to do so for everyone else, too. It all started with a mist, one that gave everyone stats and levels, but also disabled technology and transformed animals and humans into cybernetic horrors that preyed on the living. Within months of its inception, civilization had crumbled.

Just yesterday, Ben was a petty criminal getting by on fleecing New York’s one-percenters. Today, he's got a new face, a new name, and a new world to navigate. And Ben’s thinking maybe this time around, he’ll use his skills at disarming and deceiving to help out people other than himself. Maybe. Watching a medieval City Guard fight off a 20-foot-tall ooze that crawled up from the sewers will make you think twice about life decisions.