Pi

Pi is the game's name for the moon cult of the Andean highlands of what is now Ecuador, centred on Catequil, a god of thunder and water. In the Cayapa language pi means sacred water, and the springs and lakes where Catequil was thought to live were left untouched except during ritual.

Catequil was shown with a thunderbolt in his hand and the torso of a jaguar, and was tied to the waning moon. On such nights he was believed to release the animals in his care, and a man seeking leadership bathed in his spring in an initiation rite to win courage and fortune.

The Puruhá and the Caranqui kept lunar calendars. His cult spread north into Colombia and south to the Huamachuco of northern Peru, where he merged with the lightning god Illapa.