Charlie loves a challenge he's addicted to video games and an expert at figuring our how to get to the next level. But sometimes the real world can seem a bit dull. Then he finds himself on the slopes of an active volcano, with red-hot lava heading his way! There's no time to be bored with Bear as his guide out of danger.

"In a post-apocalyptic eastern seaboard ravaged by disease and war with a manmade race of people called Partials, the chance at a future rests in the hands of Kira Walker, a sixteen-year-old medic in training"--

After facing their first battle, the remaining mountain cats must seek the Blazing Star in order to survive a new threat: a deadly disease sweeping through their territory.

In a day-after-tomorrow Montana, fifteen-year-old Valley (now Valkyrie) and her big brother leave their underground den to fight a government that will kill them like coyotes.

"The way home. The spires. They've been looming in the distance, watching silently as the young survivors of Aero Horizon Flight 16 crossed a gauntlet of surreal and dangerous landscapes. After weeks of hardship, Molly and her friends have reached the eerie structure they spotted at the start of their journey, all in a desperate bid that it will provide answers about their ordeal...and perhaps a way home. Here the survivors will finally learn the...

Following his dreams of finding a safe haven in a new place, Vasco leads a motley group of rats out of the city, through a dangerous sea voyage, and finally to a forest where the rats, now a true tribe, can make a fresh start.

Baalboden has been ravaged. The brutal Commander's whereabouts are unknown. And Rachel, grief stricken over her father's death, needs Logan more than ever. With their ragged group of survivors struggling to forge a future, it's up to Logan to become the leader they need -- with Rachel by his side. Under constant threat from rival Carrington's army, who is after the device that controls the Cursed One, the group decides to abandon the ruins of their...

In post-apocalyptic New York City, Jesse, Dave, Anna, and Mini discover the lengths they will go to survive in a world where horrifying predators roam the streets, searching for human flesh.

Set during the height of the Russian Revolution and told in alternating voices, sixteen-year-old Evgenia--a peasant and proud member of the Bolshevik party--agrees to help a seventeen-year-old bourgeois girl traverse the war-torn countryside in search of safety, but Anna is harboring a secret that could cost them their lives. Includes historical note and author's note.

Twelve-year-old Alice Dare is one of 300 seven- to sixteen-year-olds evacuated to Mars to attend school and train as soldiers, safe from the war with Earth's invading aliens, the Morrors, but when all of the adults and robots mysteriously disappear, the youths must survive on their own.