Dan Jolley 
Hero Twins [PDF ebook] 
Against the Lords of Death [A Mayan Myth]

Can two young boys outsmart and outwit the lords of death? The Hero Twins, Hunahpu and Xbalanque, were blessed by the Mayan gods with special powers. But their incredible skill at playing Pok-ta-Pok, the Mayan ball game, angers the lords of Xibalba, rulers of the land of the dead. When the lords challenge them to a Pok-ta-Pok game in Xibalba, the twins know they must use all of their powers and cunning to defeat the lords’ many challenges. Will they survive the land of the dead?