The Great War at Sea series of board wargames released by Avalanche Press features operational and tactical-level naval combat in the period of the early battleships and dreadnoughts (various titles cover from 1898 to 1930). Each game in the series comes with a common rule book and tactical map, as well as game-specific operational map, counters and scenarios.
There have been nine games in the series to date, and it was the basis for Avalanche's spin-off series the Second World War at Sea, as well as a proposed new series dealing with ironclads. It has proven very popular, with the third game being Avalanche's sixth best selling title.[1] Also, two of the titles have received Origins Awards.[2][3]