There is a Lankhmar boxed set on Kickstarter for DCC. I'm tempted to jump in, even though I already have the AD&D version from TSR. The DCC magic system really does seem to fit with Fafhrd and the Grey Mouser - magic is dangerous to be on the giving or receiving end of, no one really wants magical items, and it's all about the adventuring now than building up a domain or retiring to own a tavern.
Because of that, all three of the DCC Lankhmar items on RPG Now are on sale for $2 each - roughly 75% off. I'm thinking of getting one just to see how they are for me as a non-DCC player, but I'm not sure which. Honestly if I was going to play a game set in this world, I'd use GURPS, but DCC adventures are generally pretty entertaining. Any recommendations of which one I should get to try them out?
DCC Lankhmar: Through Ningauble's Cave
DCC Lankhmar: Patrons of Lankhmar
DCC Lankhmar: Masks of Lankhmar
I'm tempted by the boxed set, although I'm not sure I need anything - not even the AD&D Lankhmar book - to run a game set there.
There is also an enhanced version of Planescape: Torment coming out, for $19.99. I've played it through, er, three times? I can't see playing it a fourth (I think the third time I managed to do everything that I didn't do the first two times.) But if you haven't, take a look. It's a great game that really pulls you into the story.