The religious video game “Left Behind,” based upon the book series of the same name, makes use of what many consider to be spyware. A third party application, an engine created by Double Fusion, controls in-game advertising. It tracks how many times ads are viewed, and when the game is played, plus the player’s geographical location and some other personal information. This individually identifiable data is sent back to the advertiser’s servers. “Left Behind” was already stirring controversy due to graphic content, as the like-named books preceding it had, even before this currently hot-button issue was discovered. Samples of the game, put out by publisher Left Behind Games, will be distributed via churches and other religious organizations, but will the congregations buy into being brazenly spied upon?