There is thelittlebang. I wrote in that last year and it was a lot of fun. I've run into a few SPN ones that sprung out of general Big Bangs for that fandom. There might be more, but sadly not in fandoms I read heavily in or have had time to explore.
ETA: There's also an awesome Zelda/Princess Ruto fic written for a gaming big bang.
Edited (D'oh, forgot to mention my favourite one!) Date: 2012-07-31 01:04 am (UTC)
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branchandroot
Well...
Date: 2012-07-31 12:59 am (UTC)ETA: There's also an awesome Zelda/Princess Ruto fic written for a gaming big bang.