The Maya civilization had many complex religious beliefs, including that the gods created humans multiple times from materials like clay and wood before succeeding with corn dough. They believed in an underworld called Xibalba ruled by jaguar death gods, and that souls of the deceased traveled there. The Maya had over 150 gods with roles like creation, the elements, rain, the sun and death. They performed bloodletting and human sacrifice rituals to please the gods and ensure good harvests, victories in war, and entrance to the upperworld after death.