Primal Soup is a larp for 4–8 players (or maybe more, if you have a bigger hot-tub), written by Mo Holkar. It was designed for Consequences 2018, after a suggestion by Elina Gouliou.
Here's the pitch:
“Here, in the warm waters of the early oceans, bubbles rise and burst, and the water swirls: with nothing to witness it. Life here is simple and primitive. These peaceful, nutrient-rich depths provide the ideal conditions for creatures to develop, and to grow. Together, we will follow their journey through the Primal Soup.”
You can download the script here: Primal Soup (pdf)