This is a simple, comical "story-type" game. One person writes a part of a story about anything or anyone without looking at anyone else's posts yet and ends it with "and then..." Then they may look at the other posts. This goes on forever and can create a quite comical story.
Once upon a time there was a lion who thought he was a mouse. He was constantly going from house to house, eating through the walls to make "mouse holes". One day, he was caught by a house wife. She lifted her frying pan and then...
he screamed and he flew back to earth and landed on a house and ate a tree cause he thought it was cheese but he tasted it and spit it at a monkey and the monkey turned to Darth Vader and then...
Anyone who thinks sunshine is beautiful has never danced in the rain.
He broke out, by gnawing "Mouse Holes" in the Walls, and went out to look for a Grocery Store, where he thought he might (finally) find some real Cheese, and then…
The USA media wrote an article about the lion and the cheese and the government claimed both the lion and the cheese but Russia refused to give up the cheese starting WWIII, WWIV, and WWIV all at the same time! And then...