Will start the next challenge a little later today.
I did PM Charton and got a response. Something along the lines of "I'm well aware it's still going on and I don't want out." So there you have it, Charton is still in it. Of course now that it's individual challenges, well, we'll see how long he lasts, who knows?
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Indie game board: http://www.gamefaqs.com/boards/293-indie-gaming