Patchwork Universe is coming towards the end of its beta test phase, and so now would be a very good time for interested people to sign up for the game proper. It's a collaborative storytelling game done through web forums, with an interesting universal metaphysics. It attracts a high standard of writing, and is a lot of fun to take part in. Have a look around the site and see if you think you'd enjoy it. There's room for pretty much anything you'd like to do within the setting, so feel free to take it as an opportunity to stretch your imagination.