Worlds collide

Book worlds come together. PJO, HP, The Giver, so on. If the story is realistic or historical fiction, it just happened on the real world. How scary. Smaug, Kronos, Voldemort, and...the government? (Most distopian books in a nutshell) The premise is you get to choose what books are involved. You can also choose how they are connected. Portals? Suddenly they're there? You choose