Announcing "Kriegspiel!"
Alexander R. Galloway has recently released the game "Kriegspiel" for play on iOS and macOS devices. Inspired by the military theory of Carl von Clausewitz and the European war campaigns of Napoleon, Kriegspiel is a chess-variant played by two opposing players on a 20 x 25 game board.
To read a longer reflection on the history of the game, see section five on "Crystalline War" in Galloway's book Uncomputable: Play and Politics in the Long Digital Age.