Editing Wargame (section)

===Fog of war===
In real warfare, commanders have incomplete information about their enemy and the battlespace. A wargame that conceals some information from the player is called a ''closed'' game. An ''open'' wargame has no secret information.<ref>{{harvp|Perla|Barrett|1985|p=9}}</ref> Most recreational wargames are open wargames. A closed wargame can simulate the espionage and reconnaissance aspects of war.

Military wargames often use referees to manage secret information. The players may be forced to sit in separate rooms, and communicate their orders with the referee in the game room, who in turn reports back only the information he judges the players should know. Some recreational wargames use a referee too, often referring to them as "the GameMaster" (e.g. ''[[Warhammer 40,000: Rogue Trader]]'').

The fog of war is easy to simulate in a computer wargame, as a virtual environment is free of the physical constraints of a tabletop game. The computer itself can serve as the referee.