The sound of gunfire in the video by DesertFox Airsoft is not a software generated effect since it's actually real gunfire in an airsoft skirmish. If you go into the comments area, blanks were used in the game. I wonder how players reacted to that sound when they played... "Some players have blanks some have airsoft guns. Blank fire gun kills are through line of sight. Basically if you see a guy shooting you with a blank fire gun you're dead."