Immortal Souls: Dark Crusade is a browser version of the downloadable strategy-RPG by Comic Book RPG. You play John Turner, a reluctant vampire armed with guns, claws, a baseball bat, and a sense of vengeance. In this turn-based game, you form chains of multi-colored icons to attack hordes of richly-animated bad guys in a comic-book like world. A new class system and added features enhance the gameplay over the original.