From the campaign:
Cthulhu: Strange Aeons takes the tropes of Lovecraftian horror and transplants them into a hard, gritty science fiction setting. The two initial books, the Investigator’s Guide and the Keeper’s Guide, define the setting and include everything you need to advance your Call of Cthulhu game into the far future. Subsequent books will explore the horrors of new worlds and the dark places between the stars.
Cthulhu: Strange Aeons is fully licensed from Chaosium and is based on the 7th Edition of the Call of Cthulhu game system. Call of Cthulhu is a trademark of Chaosium Inc. and is used with permission.