Stairway to Heaven

In the variant world where aztec civilization hadn't died but Yucatan has already adopted the conquistadors, culture of both was changed in the fundamentals. Because of some fantastic phenomenon, the huge Spruce, as high as a mountain, has grown in the middle of the country. They say, gods have ordered people to do annual human-sacrifices cults there. Then, it slowly turned into an entertaining show where players had to climb the saint tree up to the top, and the surviver would be awarded to bring one dead soul back to this world, revive them...