5 out of 5 rating for Curse of the Crimson Throne Adventure Path
Although there are a few weak spots (see below), this is one of my favorite AP's that I've read to date. It's got a compelling storyline, a lot of decent city-based adventuring, and a compelling big bad guy (er gal actually).Weak points are the whole Shoanti ritual section (for me, I didn't find that very interesting) and the kind of underwhelming finale. I've heard some people complain about the big meaty dungeon crawl that is Scarwall, but I think it's really well done, and to me it seems like the real highlight of the AP. There are lots of bits that seem worth elaborating on (Blackjack, the nosferatu, chaos running rampant throughout the city, that psychotic elf cleric who is the best NPC ever) - it's almost an embarrassment of riches. As a GM, my big problem would be picking and choosing what to spend time on fleshing out. Of course, now there is also the problem of converting to a more modern rules system - either Pathfinder or whatever floats your boat. I really despise the mess that 3.5 became, so I'd personally be disinclined to play it as is under 3.x D&D rules. If I was playing Pathfinder, I might not judge CotCT to be worth the effort in converting, since there are other ready to roll AP's that I think are almost as strong (Shattered Star, RotRL AE). But if you're looking for an AP to convert to 5E or some other system, I'd put this near the top of your list, especially if your group is in the mood for some swashbuckling urban plotlines.