This isn't your run-of-the-mill video game: "Left Behind: Eternal Forces" is based on the best-selling "Left Behind" book series about the apocalypse. But it's the apocalypse without dismemberment or graphic bloodshed, though the game has an element of violence that some Christians argue is counter to teachings of the Bible.The game's creators say they hope to wriggle into the multibillion-dollar mainstream video game market by offering a real-time strategy option for serious gamers. Yet, they believe the faith-based theme is important, too. "What we've decided to do is embed our message in a game so that it's not overt but it is in the game," Left Behind Games President Jeffrey Frichner said. "We're not ashamed of it. There are Scriptures in the game and we're faithful to those Scriptures."