Luna is a hardcore gamer, and it piques Celestia's curiosity. She's skeptical at first, but Celestia is willing to learn about Luna's favorite pastime.

A Rainy day has trapped the Cutie Mark Crusaders in the Library, So Pinkie decides to tell the a story about a far away place where ponies stand on two legs and drive cars, shoots guns and find legendary treasure. Follow along as Pinkie tells from them opening the mysterious Vault, To fighting zombies and the Insane Dr. Flootershy (Not Dr. Fluttershy wearing a mustache), To Mad Trixxie's Underdome, And much more....

Note from Author: Thanks for your replies, I am amazed that this is really popular and I hope I don't disappoint. A word of warning that since they are characters of Pinky, they might be different then you expect.

Also Fanart by AppleDash: http://lellcious.deviantart.com/art/AppleBrick-287076295

UPDATE: A challenger appears BRANDISHING THE SAME COVER. While mine is a story, his is an Alternate Universe sort of deal. Check him out: http://www.fimfiction.net/story/12536/Ponylands

Big Macintosh had a perfectly good reason for taking Twilight's doll; he wanted to use it to finally start a conversation with her. But Applejack's having none of it, Rarity's getting the wrong idea about everything, and the Cutie Mark Crusader Matchmakers are about to really throw a spanner in the works! A comedy of errors launching a full fleet of ships.