The gods always seem petty and cruel, only degree changes when you look among them. The gods of the Aztec were viewed with reverence in this, for they had a special place among the people. The gods may demand blood by the bucket load- but it was the universe that demanded it. If the gods don't maintain the sun the world ends- existence with a price tag.
The forgotten god Maczpzpalotl was slightly different from his brother gods. A rare Aztec god that had his followers preach that human sacrifice wasn't necessary, Maczpzpalotl accepted a sort of sacred prostitution instead of the cutting out of the hearts of his followers. Supposedly he would have the women of beauty serve the temple as priestesses/prostitutes and those of particular beauty would be whisked away where the denizens of the spirit realm could use their bodies for breeding and pleasure. Instead of killing people by the thousands, the people would only lose a very small portion of the marriageable women- women who the god assured would live existences of pleasure and the miracle of birth.
Unfortunately, Maczpzpalotl seems to have never gotten word that the Aztec empire fell. Having not had a "sacrifice" to him in about 500 years, he's gone quite mad. Where as the fertility god's realm used to be one of joyous birth and a sexual utopia, now it's a cruel and brutal place where most everything male is driven into insanity- and most everything female has long since been raped to death or insensate. And at the top of the tallest mountain in his realm, Maczpzpalotl is said to wait by the only exit- waiting. Just waiting.
A few archaeologists and adventurers approach his temple soon, and the mad god may have his chance at revenge yet.
[Basic story, some beautiful adventuresses get abducted by an insane Aztec god of fertility. Hijinks ensue. Don't plan to take many and will only take female characters. Some system rules will be explained by Lirliel, but it's not that deep of one. She'll explain.]