Have you ever written a realistic fiction collaboratively before? Tellast is a website where you can write realistic fiction with the community, for fun.
There is only one rule to follow: you have 300 characters limit. After you wrote stories up to 300 characters (it can be less, either), other writers will try to continue the stories. All the parts, which are added to continue will be voted by members. Voting is instant, when you add your part, it can be voted instantly. The first part which reaches 5 is the next part of the story.
You can read the stories created by the community.
You are absolutely free to create fictional characters and fictional places. Just try to be creative, so, people will collaborate on your stories.