Ninety Trillion Fausts

Three teams pursue horned creatures known as demons through a gate into another spacetime continuum, and fight each other all the way. But they now must join forces to save the 90 trillion beings of the gallaxy in danger of losing their lives--and souls.
The stunning conclusion to The Quintara Marathon from the bestselling author of the Change Winds series. To save the galaxy from the terrifying Quintara, three teams from warring empires put aside their differences and fight as one in an alien world which harbors evil idols, labyrinthian mazes, and a demon prince who offers to fulfill their deepest desires--in exchange for their souls.