Prior to invoking this god power, a player can decide in what direction they wish to have the flood travel. It is advisable to direct it away from ones own base, since it affects the caster's units and buildings as well. Upon initial impact, this God Power deals five times as much crush damage as it deals hack damage, meaning it is extremely effective against buildings. As it begins to move, it deals more damage to units. The best way for units to protect themselves from the flood is to garrison inside buildings.
Great Flood is most effective on maps such as Megalopolis where allies are close to one another. With careful planning, it can cause enough damage to two or more enemy bases at once. Although it can damage several buildings and units along its path, Great Flood does not deal as much damage as other "disaster" Mythic Age god powers. It will nonetheless make it easier for the user's army to finish off whatever remains standing.
Ao Kuang, Dragon Lord of the Eastern Sea was once notorious for his temper, and the Fengshen Yanyi tells stories of the disasters he caused to inspire fear in his subjects. If he was slighted by any of the villages and cities within reach of the coast, or if they refused to submit to his rule, he would not hesitate to send a great flood to wipe them off the face of the earth. The fear he inspired was so great that no one ever complained to Huangdi about his actions, lest the great dragon take vengeance.
It was only after the death of his son Ao Bixi and his own defeat at the hands of Nezha that Ao Kuang adopted a more aloof lifestyle, even though he won against Nezha in the end by forcing the god to sacrifice himself for his family. He now uses his powers more judiciously, lest another being of such power take him by surprise.
- There are 3 versions of this god power in the game, the one used by Ao Kuang is called "Tsunami" in the Scenario Editor, the other two are "flood" and "flood weak", which function more like the Earthquake god power, but with a water effect added.
- The icon for Great Flood is taken from part of Poseidon's full portrait artwork.