Insurgency 2 is a primarily multiplayer FPS (First Person Shooter) with a gameplay style best characterized as high speed tactical. The game features quick action yet retains a strong emphasis on realism in its environments and gameplay. The game is a sequel to a popular free-to-play total conversion for Half-Life 2 entitled Insurgency. Featuring an ultra realistic style of play based on real world locations in an ongoing war in Iraq, it was downloaded a million times in the first week of launch alone.