Deepen your strategic command with the definitive guide to aerial combat in an alternate-history 1914. Whether you are expanding your fleet’s capabilities or mastering the intricate maneuvers of high-altitude warfare, this expanded rulebook provides the tactical depth required to dominate the skies in Leviathans: The Great War.

• Contents & Features:

Core Rules: Covers standard play, free play, and campaign options, scaling from quick skirmishes to large fleet battles.

Phases & Mechanics: Details turn sequences (Initiative, Fire Torpedoes, Movement, Resolve Torpedoes, Attack, and Cleanup) utilizing color-coded dice (including D12s for combat and D6s for slots).

Factions & Lore: Features extensive alternate-history background lore (spanning 1878 to July 1914) and specialized national rules, fleet slots, and equipment for major powers like Great Britain, Imperial Germany, Japan, Russia, Italy, Austria-Hungary, and the United States.

You will need a Leviathans Starter Box or fleet packs to play the actual game.

It may not be possible to ship very heavy items outside of the Mainland UK.
Released: 17 November 2026