Alternate history or parallel universe describe books that take place in a world similar to ours but one in which intergalactic travel is a reality or that vampires roam the night. Most steampunk and urban fantasies fit into the alternate reality category. Alternate histories ask “What if?” What if JFK wasn’t assassinated? What if the Allies had lost WWII? Interested in exploring a new reality? Try one of these:
Parallel by Lauren Miller. A collision of parallel universes leaves 18-year-old Abby Barnes living in a new version of her life every day, and she must race to control her destiny without losing the future she planned and the boy she loves.
Through to You by Emily Hainsworth. When a teen boy loses the love of his life in a car accident, he’ll do anything to get her back–even travel to another universe.
Unraveling by Elizabeth Norris. Perhaps Janelle was distracted, but as she leaves her friends on the beach to cross to her car, she doesn’t see the faded blue pickup until it’s too late. She dies, right there in the road. Then mysterious Ben arrives and lays hands on her, and she is alive and completely unharmed. At home, she finds some strange pictures in her FBI-agent father’s study, pictures of apparently melted bodies, each noted with a time stamp. Janelle sets off to pursue both mysteries and begins to suspect that two opposite phenomena, the loner boy with his healing abilities and the perpetual disintegration of strangers, may be related. And related, somehow, to her.
Pivot Point by Kasie West. A girl with the power to see alternate futures lives out six weeks of two different lives in alternating chapters and ultimately she is forced to choose which reality she’s willing to live through and who she can’t live without.
Golden Compass by Philip Pullman. Accompanied by her daemon, Lyra Belacqua sets out to prevent her best friend and other kidnapped children from becoming the subject of gruesome experiments in the Far North.
Etiquette and Espionage by Gail Carriger. In an alternate England of 1851, spirited fourteen-year-old Sophronia is enrolled in a finishing school where, she is suprised to learn, lessons include not only the fine arts of dance, dress, and etiquette, but also diversion, deceit, and espionage.