Mythomorphosis is a collaborative storytelling tabletop roleplaying game about how stories change over generations.

You'll create a society, then create a central myth that that society tells. Over the course of five generations you'll decide how that myth changes in reaction to historical events that define each generation.  

Mythomorphosis is a genre-agnostic game. You can tell myths about fantastic heroes of old, far-future spacefaring missions, urban legends that spread like wildfire on the internet, or anything else you can think of.