Anyone know of other games with boards suitable for Conan?
At least one poster reported using boards from Zombicide Black Plague.
The Conan RPG from Modiphius has a crossover map pack for the board game, available as PDF (and possibly still in hard copy - that might or might not have been limited to their KS campaign). Unfortunately, i find no mention of them on http://www.modiphius.com/, but "certainly" they'll be available for purchase at some point. Those maps haven't yet been shipped to backers, and i have no idea when they will be.
Here's one of Modiphius's related KS posts: