Yeah, thinking back on it it's not very intuitive if you haven't played a lot of text-based games before, and it's not really a good starting place to jump in.

Perhaps an atmospheric and shadowy flash game (http://www.newgrounds.com/portal/view/541124) to make it up to you?

(Also, concerning your treat: I know Vetinari/Drumknott is your main Discworld pairing, but I haven't read too much Drumknott; how do you feel about Vetinari/Vimes?)