The Flame of Olympus is the absolute power that was formed by the gods, and it is also one of the only way to defeat them. It may have an enticing glow, but its touch is lethal to both man and god.
After Gaia betrayed Kratos and lets him fall in the depths of the Underworld, Athena returns to aid a de-powered Kratos in his quest to kill Zeus. Puzzled on why Athena would help him kill their father (especially after giving her life for him), he learns that the Flame of Olympus is the only way to defeat a God- including the king of the gods. When he reaches the Flames in Olympus, he discovers Pandora's Box at the heart of it; the very box he used to kill the former God of War, Ares. Athena explained that the true power to kill a God rests within. But to reach it, he must first seek out Pandora herself. As explained by Hephaestus, he used the Flame to help him forge the box to contain the evils born of the Titanomachy. The Flame itself would be the perfect safeguard for the box. But to pacify it, a key is required. The key he created was born out of the heart of the Flame: Pandora.
Kratos sought out Pandora and managed to rescue her from the Labyrinth. But to get her to the Flame, he had the raise the Labyrinth. He descended into the caverns where it was stored and solved it- thus assembling the Labyrinth, before breaking the Chain of Balance down in the Underworld, freeing it from the grasp of the deceased Judges. Then, using a crank by the Flame, he raised the Labyrinth; bringing Pandora to it, while causing the foundations of Olympus to crumble. After a fight between Kratos and Zeus, Pandora attempts to enter the flame, but is stopped by Kratos. He attempts to pull her away from the flame, with her begging him to let her go, and Zeus encouraging him to save her. However Zeus' "encouragement" soon involves him taunting Kratos about his failures, which enrages Kratos to the point of releasing Pandora into the Flame to attack Zeus. This grants him access to the box...but when he opened it, the box was empty.
- Although Hestia doesn't make a notable appearance in the God of War series, it may be possible that she is the Flame of Olympus, since she is the oldest daughter of Cronos, and as being inside the titan's stomach had a brutal effect on Hades, it is possible that she was completely disintegrated by the stomach acids, but being immortal, she couldn't have died, which would also make sense since the Flame of Olympus was created during the war.
- If Hestia wasn't the Flame of Olympus, it is likely she died either in her father's stomach, or during the Great War. Also, as the goddess of the hearth, it could be possible that she tended to the flame but was accidentally killed by it.
- Another theory is that the Flame is the primordial "flame" that created the universe. At the beginning of the game the Flame appears and explodes into trillions of stars. If this is the case, then it stands to reason that the power of creation is greater than even the Gods, and explains why Hephaestus was unable to re-make Pandora; for he lacked the power of the Flame.
- The Flame of Olympus should not be confused with the Fires of Olympus as they are two separate things.