The Rules:
1) In order to play, first post one screengrab/WIP/anything of yours. This is your admission ticket, you can't play without it.
Old crap you are embarrassed of is encouraged.
2) Once you've posted a ticket image, you are now free to paintover, redraw/reinterpret/combine anything in the thread. Have fun with it.
3) When you post your tag track the lineage. Say willy-wilson does a drawing, then Tim-bo-jay did a tag of it, and then Green does a tag off of that. Green would post this ahead of his image:
Willy-WIlson > Tim-bo-jay > Green
4) After you've posted your new tag, you are free to post a new ticket image.
SUPER LURKER CHALLENGE:
If you're a lurker (<20 posts) you can post up to 5 admission tickets, which is to say 5 of your own pieces. New members are vital to the health of any good community, so get posting.
TIPS
-This is not just for paintings posting sprites or pixel work is highly encouraged as well.
-Don't worry about finishing it, someone else will.
Iterative collaboration is part of the fun. If you're scared about doing a tag "right," then you're not approaching treating it like a game--this is for fun, for loosening up. For seeing an old idea of yours get bounced around in an interesting way.
Original Rules written by Jack Monahan for polycount, revised by me.