Battle of the gods:
In ancient times, the gods did not only chill around, drinking wine and enjoying the eternal life, they also played some kind of chess-like boardgames.
This legendary play was between the god of the sky and the god of the earth. The first decade of this play was fair, but then one player begun to cheat (it is not passed down which one played unfair) and all this ended in a fight between those two gods, raging around the world causing enormous destruction.
To stop this absurd fight, the greatest god himself interfered and punished the two fools with a eon of house arrest for each one. The game was paused, but it is very likely, that sometime in the distant future, the two gods will continue their game.
...hopefully the pieces won't get moved meanwhile.