I think a pretty good site would be:
writerscafe.org ...
It offers you to make friends and have people read your work and comment on it. If you don't want someone to see what you've written then you can make it un-openable to others. You can join for free, comment, rate, make friends, and most...
Ooh! It'll be really hard to beat Quidditch!
Hmm ...
Basketball played with invisible people ...
Drag Racing? Lolz, like NASCAR except the "drivers" would "drive" dragons in a rink up in the air. Spectators can watch from floating stands.
Apparators. --- Your goal is to save your hostage...