7 books in series

Achtung! Cthulhu

Achtung! Cthulhu is a 7-book series with 7 released primary works first released in 2012 with contributions by Sarah Newton, Dave Blewer, Alex Bund, Adam Crossingham, Mathew Pook, Lynne Hardy, Bill Bodden, Greg Stolze , Dennis Detwiller, Allan Gooda ll, Shane Ivey, Dave Blewer,, Chad Bowser, Ilya Sadchikov, Chris Birch, Yuri Kalugin, Sergey Kataev, Benjamin Wenham, Jesse Hawkins, Joshua O'Connor, and Reuben Saunders.

Achtung! Cthulhu: Keeper's Guide to the Secret War
Achtung! Cthulhu: Investigator´s Guide to the Secret War
Achtung! Cthulhu: Elder Godlike
Achtung! Cthulhu: Terrors of the Secret War
Achtung! Cthulhu: Zero Point Part 2, Heroes of the Sea
Achtung! Cthulhu: Fate Guides to the Secret War
Achtung! Cthulhu: Zero Point Part 1, Three Kings
Achtung! Cthulhu: Guide to the Eastern Front
Achtung! Cthulhu: Guide to the Pacific Front
Achtung! Cthulhu: Interface 19.40