1. A shooting simulation system, the system comprising: a plurality of firearms, each firearm being held by a separate player, wherein each player has a user computer and an optical system associated with the firearm for capturing an image, the image providing information on a trajectory of a simulated bullet fired from a shooting firearm; wherein the optical system is aligned relative to a known sight of the shooting firearm, the optical system capturing the image when a trigger of the shooting firearm is pulled; an image recognition system for determining if the captured image is a legitimate target; wherein the user computer determines if the captured image is a hit or a miss of a targeted player, the user computer using information obtained from the optical system and image recognition system for determining if the captured image is a hit or a miss of a targeted player, wherein the optical system detects a predetermined indicia of the targeted player in the captured image to determine if the targeted player is a legitimate target; wherein the indicia identifies the player and is configured to be worn by the player.