The 13th God (The Cycle of Galand)

The entity of Nolost has racked Rale with plagues, disasters, and armies of demons. Dante, Blays, and Gladdic's final effort to defeat him has failed. Within weeks—if not days—Rale will be destroyed. One last hope remains. They can't kill Nolost, but they may be able to eject him from Rale before he can complete his work. To do so, though, they'll have to destroy a world themselves: Olastar, the home of the portals that link all other places together. Even with a guide to help them through it, Olastar seems bent on killing them by assaulting them with grotesquely warped animals and malevolent spirits. As they work toward the world's core, they learn something horrifying: this strange realm isn't unpopulated like they'd assumed; it's inhabited by millions of people. If Dante and Blays want their own world to live, they'll have to kill every last one of them.