The Discworld Roleplaying Game (now available in PDF)

[Yako]

Had been waiting for this for ages!^^

Contrary to what some people were saying, it is NOT easy to get hold of it outside the states unless you have a stroke of luck (or if you want to mistakenly buy the original GURPS Discworld), thus this really is nice for the European customers.
I only think it is a bit of a shame the map of the Discworld ends up split over two pages, it would have been nice to maybe have a full color version of it included (both in the hardcover and PDF), but the same map is luckily easily available online.

I think it is overall a good choice to simplify modifiers to advantages into flat values added or subtracted, especially since it is fully compatible with the full GURPS rules.

I do like the slightly simplified / freeform style ritual magic and appreciate that there has been quite some attention to detail to keep certain Discworld conventions.

Admittedly, I think it fits how Witch magic is presented better than how WIzard magic is presented, but to be fair, WIzard magic was never very consistent and this is much more fun.