What are some D&D products that used a 3rd-party's IP?

[JeffB]

Oh, the first ever standalone D&D module, Palace of the Vampire Queen (1976), was actually published by a company called Wee Warriors and only distributed by TSR. Not sure if that counts or not. The same company also published the first set of character sheets, under the title The Character Archaic, and which was also distributed by TSR.

And these are now in print again (the modules, anyway)

 

[JeffB]

What about "Temple of the Frog"? Did Dave Arneson keep his Blackmoor IP rights?

Yes- there were 3.X and 4E versions of Blackmoor and Dave had the Blackmoor Supplement on his website for free download for years (which kinda sucks, because Tim Kask & Steve Marsh did half the book's content and never got any credit for it)

 

[Windrunner]

 

[Deset Gled]

Did they ever do anything piratey when Pirates of the Caribbean was at its peak in popularity?

There was a 3e pirate splat book (Stormwrack) between PotC 1 and 2, but it wasn't an officially licensed Disney product.

 

[dave2008]

Off the top of my head: There were the Cthulhu and Melibone mysthoi in the original Deities and Demigods. The Lankmar mythos in the 2e Legends and Lore. Rokugan in 3e's OA. I believe there were some Red Sonja modules.

pretty sure Lankmar, aka the Nehwon Mythos, was in the original Deities and Demigods

 

[dave2008]

Wow, I never realized there were so many tie-ins! Thank you all for sharing!

 

[Bohandas]

Off the top of my head: There were the Cthulhu and Melibone mysthoi in the original Deities and Demigods.

I'm not sure if cthulhu counts as an intellectual property since lovecraft's stuff is public domain

EDIT:
but if we are counting it then the ravenloft avdenture based on Poe's "Masque of the Red Death" counts too

 

[ccs]

I'm not sure if cthulhu counts as an intellectual property since lovecraft's stuff is public domain

It wasn't at the time.

 

[reelo]

Still have those...

 

[QuentinGeorge]

Diablo and Warcraft books both come out early in the 3E release cycle.