The Avatars Trilogy

The Avatars Trilogy is a series of books by Tui T. Sutherland about a group of teenagers who have survived the end of the world. The five of them are lured to New York City by voices in their heads, and discover that they have been chosen by the ancient gods to represent them in a battle to the death over which set of gods will inherit the Earth.

Contains the following titles:
 * 1) So This Is How It Ends
 * 2) Shadow Falling
 * 3) Kingdom of Twilight (Not to be confused with the other book published around the same time.)

This book includes examples of:

 * Adventures in Coma Land: Diana in Kingdom of Twilight.
 * After the End
 * A God Am I: Amon plays a little to this, although YMMV.
 * A Mythology Is True - Or All Mythologies Are True
 * But Not Too Foreign: Averted with Tigre, who is from South America and speaks no English. Played straight with Kali, who is Indian-American.
 * The Chessmaster:
 * Crossover Cosmology: This book is built on this.
 * Genki Girl: Oya.
 * Giant Flyer: The crystal pterodactyls.
 * Gods Need Prayer Badly: Because they have this nasty little tendency to wink out of existence when everyone has forgotten them.
 * I Am Who?
 * Idol Singer - Diana, in her Venus persona.
 * Let's You and Him Fight - The ancient gods' plan.
 * Ordinary High School Student
 * Plot Tumor: Due to the nature of the book's writing style, some storylines lean toward this in the first book, particularly Tigre's.
 * The End of the World as We Know It
 * Quit Your Whining: Kali has this attitude toward pretty much everyone's problems, although Tigre is the one who she says it to the most.
 * Time Skip: The main characters go through one of epic proportions.
 * Twenty Minutes Into the Future: The books were published in 2006-2008, taking place in 2012 (and then in 2087).
 * The Unchosen One: Gus. The gods chose to leave the Polynesian gods out altogether, due to their people being spread out all over the world, and their religion being mostly forgotten. However, the Polynesians used the last of their power to force their god of war, Oro, into Gus.
 * Walking Disaster Area: Kali fits this to a T, as it is her power.
 * Xanatos Roulette: Getting Oro into Gus fits this.
 * Xanatos Roulette: Getting Oro into Gus fits this.