A complete, stand-alone cthulhu-themed RPG that offers a fresh take on playing with the mythos. Specific time-travel rules focused on how the actions of the characters in the present day change the coming future apocalypse. Five fully detailed sample time lines; play a mission team working to prevent one apocalypse, or string multiple apocalypses together for a longer campaign. A standalone, fate core RPG about time-traveling heroes who are preventing a future apocalypse brought on by the arrival of the Elder gods.