Glass, Ancient, Emotion. One session, two hours.
Intro
When you signed up for the day trip to Talquetzlachitalotacitequotlarp, famous for its molten glass statues, this wasn't what you had in mind. How were you to know that the comet shower and the dark solstice would awaken the gods slumbering within the statues? And how were you to know that those gods wanted to possess you and make you do their bidding?
And in such a short-sighted way, too.
The PC's, what happens to them and what they do
Players are tourists. On their day trip to an ancient site they will accidentally - or on purpose - touch molten glass statues. They will be possessed by single-minded spirits of blind emotion, directed towards someone they have strong connections to.
Perhaps Joey hates his kid sister, but the god Quipporay just needs someone to Admire - and Joey becomes its vessel, showering sis with gifts and attention. Perhaps Daddy is angry with his boss, but is possessed with Hunkahunka, god of Desire, and tries to give him the love that dare not speak its name. Perhaps Mummy thinks she loves Daddy, but the god Quetzalkilleverything disagrees.
The characters can try to fight their possessors - or give in.
Questions I need to answer
After the first person is possessed - why do they keep on touching new statues, getting possessed along the way? What's in it for the characters?
What role will the internal conflict (between person & possessor) play? Perhaps there's a mechanical payoff for staying possessed? Perhaps it lets you choose who the next person is possessed by?
How does the game end? There should be some sort of aftermath/final scene.