Great Pacific War is Avalanche Press' strategic-level game of the War in the Pacific. The game covers the entire war from December 1941 through 1946 and includes the forces of all participants. Players are placed in the positions of the commanders of the Japanese, British, Soviet and American forces in World War Two.

The system is the same one used in Avalanche PressÍ game, John PradosÍ Third Reich. In addition to five scenarios covering all or part of the War in the Pacific, Great Pacific War includes rules to link it and Third Reich to play the Second World War, a simulation of the entire conflict with up to seven players. Included in the game are five scenarios for the Great Pacific War and three scenarios for the linked Second World War. One of the Great Pacific War scenarios covers a possible 1931 conflict between Japan and America as postulated by the British journalist Hector Bywater in his book of the same title.