Triple Alliance is a book supplement for the Great War at Sea series based on those plans. It is not a complete game; ownership of Mediterranean and Dreadnoughts (and only Mediterranean and Dreadnoughts) is required to enjoy all of the scenarios.
The book includes 110 new playing pieces. There are several versions of the Austrian battleship Radetzky, both the small dreadnought and full dreadnought variations presented by her design team in 1907. The all-big-gun battleship originally proposed for the Italian Navy by designer Vittorio Cuniberti is included, along with other ships cancelled for financial reasons. And the French receive a full class of unusual battleships proposed but never built, that carry the big guns of a dreadnought but also the not-quite-as-big guns of a semi-dreadnought.