This is simple. I feel like someone else already did this, but just know, I am not copying 
Continue the story reading what the person above wrote, you can also read all previous people's texts. Don't continue the story with something that doesn't connect with the person above's phrase/text, like, for example:
Someone wrote this: "The boy met his best friend. They talked for a while."
Then another person(below the person above) writes: "He ate popcorns while watching a movie. So he got to bed."
I'll start with a phrase, and someone else continues it, making a cool story.
Rules: Do not use inappropriate words; keep the story cool(joking is allowed, just don't make it.. you know.); and use pure creativity
Making crazy things(not sooo much) is allowed.
Here I start: Some persons were out in a camping together. They were 5 big friends together, in the middle of the forest.
Continue the story reading what the person above wrote, you can also read all previous people's texts. Don't continue the story with something that doesn't connect with the person above's phrase/text, like, for example:
Someone wrote this: "The boy met his best friend. They talked for a while."
Then another person(below the person above) writes: "He ate popcorns while watching a movie. So he got to bed."
I'll start with a phrase, and someone else continues it, making a cool story.
Rules: Do not use inappropriate words; keep the story cool(joking is allowed, just don't make it.. you know.); and use pure creativity
Making crazy things(not sooo much) is allowed.
Here I start: Some persons were out in a camping together. They were 5 big friends together, in the middle of the forest.
