future date and once that date passed, the players would determine an action's outcome using the sales in hundreds value for specific stocks on a specific date and then dividing the NYSE published sales in hundreds by six, using the remainder as the dice result. Nuclear Destruction, by the Flying Buffalo, was an early PBM game in 1970. Origins Award Hall-of-Fame member Middle-Earth Play-By-Mail is still active today. Reality Simulations, Inc. still runs a number of PBM games, such as Duel2 (formerly known as Duelmasters), Hyborian War, and Forgotten Realms: War of the Avatars. E-mail and traditional Since e-mail is faster than the standard postal service, the rise of the Internet saw a shift of people playing board wargames from play-by-mail (PBM) to play-by-email (PBEM) or play-by-web (PBW). The mechanics were the same, merely the medium was faster. At this time, turn-based strategy computer games still had a decent amount of popularity, and many started explicitly supporting the sending of saved-game files through email (instead of needing to find the file to send to the opponent by hand). As with all types of video games, the rise in home networking solutions and Internet access has also meant that networked games are now common and easy to set up. History Early German wargames (1780–1806) The first wargame was invented in Prussia in 1780 by Johann Christian Ludwig Hellwig. Hellwig's wargame was the first true wargame because it attempted to be realistic enough to teach useful lessons in military strategy to future army officers. Hellwig was a college professor and many of his students were aristocrats destined for military service. But Hellwig also wanted to sell his wargame commercially as a recreational item. Hellwig chose to base his game on chess so as to make it attractive and accessible to chess players. Hellwig published a second edition of his rulebook in 1803. As in chess, Hellwig's game was played on a grid of squares, but it was a much larger grid, and the squares were color-coded to represent different types of terrain: mountains, swamp, water, trenches, etc. The layout of the terrain was not fixed, which allowed players to create their own custom battlefields. The pieces in the game represented real military units: cavalry, infantry, artillery, and various support units. As in chess, only a single piece could occupy a square, and the pieces moved square by square, either laterally or diagonally.