Brace yourself for a whirlwind of epic storytelling with the Achtung! Cthulhu 2d20: Gamemaster's Guide, where you control the unfolding of a thrilling World War II narrative infused with Lovecraftian horror. This guide equips you with everything needed to orchestrate a gripping role-playing experience, blending historical wartime adventures with supernatural mysteries. Navigate players through encounters with ancient relics, eldritch beings, and secret Nazi operations powered by dark magic and bizarre science.

The Achtung! Cthulhu 2d20: Gamemaster's Guide features:
- Detailed guidance for directing the game's Secret War narrative
- Tools for creating suspenseful and immersive story arcs
- Descriptions of mythical monsters and heroic characters
- Insights into the Nazi occult and Allied wartime technology
- Strategies for managing cosmic horror and sanity in gameplay