I loved the lore, and the plot, and the mystery

The dungeon itself reminded me of Lets make a deal - pick a door! Except there are about 100, so you tediously sreach for traps and open doors for 8 hours. no clue (to my knowledge) are given other than 'randomly open everything'.

I personally thought the story was rather lame. I don't know, the villain just did nothing for me, even though I did like how they were playing with Pharasma lore with his backstory. The map also has a difficult swarm monster, which even a 2nd level party would have no answer. While running away is a viable option, it feels odd that a swarm of cockroaches is the most dangerous creature in a dungeon full of demons and undead.

The real gem of the module is the map. It's a pretty fantastic map with lots of colorful background flavor surrounding Thassilon lore. This makes the map an excellent adventure for any Varisian campaign or any campaign that plays with Thassilon and the runelords. My players were completely oblivious to Pathfinder lore, but after this module, they wouldn't stop talking about the runelords.

The map, though, does have a few problems of its own. There are several areas my players absolutely refused to explore simply because they smelled like a trap but gave no incentive to look into it. The best example is one pair of rooms that do a neat, terrifying, and yet relatively harmless effect to any that linger in it. However, no sane player would ever go into the room. There's no incentive to enter it and it just screams "THIS IS A TRAP."

There's also several staircases that lead to other areas not featured in the module. It's great if you have the supplements or another dungeon in mind. For me, this module took three or four sessions to finish. Neither I nor my players wanted to use up more time there. It was extra work to make sure every "hole" was plugged in. Even having a collapsed stairway was enough to make my players waste resources getting to an area that wasn't there. It's rather annoying and comes off as a shameless plug for other materials.

Over all, Godsmouth Heresy is decent. It has a good map that touches on Thassilon lore that makes the whole module worth getting. And while I did not like the story, your players may think differently.

I'm not normally a fan of dungeon crawls but this one was pretty good. Interest in solving the mystery will propel you through the zombie and sin infested crypts below Kaer Maga. The module was simple, didn't feel tedious after nearly a day of playing, and though the fights weren't too challenging for us it was a lot of fun.

At first I felt a little weird giving something a five star rating, but then I realized there was nothing i about this module I could fault.

There is a mystery to solve,
A dungeon full of monsters to kill,
NPCs to interact with,
Plenty of hooks to start your own campaign, and
It's simple enough that a novice GM can run it.

If you only buy one Pathfinder module, make sure its this one,

I am a huge fan of classic dungeon crawls, and so this module got my initial attention. My party is half done with exploring the Ossuary, and though their number is small (3 PCs), they have managed to survive through caution and clever thinking. I have yet to have an encounter, combat or otherwise, that wasn't as enjoyable to run as it seemed to be to have played.

That all pales in comparison to the most surprising and pleasing effect of this module, and that was an attention to detail it instilled in my players. I have never had this group so interested in the fluff and background of an adventure as they are now, and their willingness to linger on these descriptive parts of the adventure have made it all the more memorable.

1st level modules tend to be dull, with viable options so limited. This module and Crypt of the Everflame do a great job at breaking out off that rut and making memorable sessions.