Blu_Matt (come back Blu!) was writing Sheeper Keeper firstly as part of a No External Files competition and then subsequently (I think) with a view to it being published by (then) Guildhall. AFAIK though, it was never finished, and Blu vanished not-too-long thereafter.
I was about to post that. Shan't bother now. :pAnyhoo, there's a Flash version of basically the same game here.