The first two installments in the Northlands Saga from Frog God Games are available here at paizo.com. The third one is out but (at the moment) only for sale at the Frog God website.
I've purchased and read all three and have some thoughts on them, individually and as a series. Thought I'd share them. This is an expanded post from something I put up over at the Necromancer website.
NS1 (Voyage of the Long Serpent) and NS2 (Beyond the Wailing Mountains) make up a two-part adventure. NS1 does give you adequate closure without playing NS2. And you could play NS2 without NS1, though you would be losing quite a bit in story richness and background. It would work, but you'd be shorting yourself. The bad guy boss is suitable for the storyline and his shadow, if not always his presence, hangs heavy over the two installments.
The first two adventures feel more like eskimo/inuit indian adventures than viking/nordic ones. The viking aspect is minimal on these; even incidental. It was mentioned by the Frog God folks that future modules are more nordic, which is fine. But you won't get much of it in the first two. Not saying good or bad, just letting you know.
However, NS3 (The Death Curse of Sven Oakenfist) is 100% viking/nordic. There is also a map of the Northlands which I found pretty cool. I was thinking of The Seventh Warrior and Beowulf (The Christopher Lambert version) as I read through it. So with NS3 you really move into a viking feeling.
The first two could be an adventure to a northern area, and then the third to a still northern but different place.
Levels are:
NS1 - 4-6
NS2 - 5-7
NS3 - 6-8
NS3 is independent of the first two: the story is unrelated. The module suggests that you could play it as a sequel to NS2 or as an in-between piece if the party doesn't move directly from NS1 to NS2. I think it would work either way. Or it would be just fine simply playing it without using NS1 or NS2.
There are a few spelling errors throughout the modules but nothing terrible and the layout is easy to read and (I would think) GM.
All three include a chunk of travel. If you don't like outdoor/overland/sea travel in your adventure, you should probably skip these modules over. They are a major part of what you're getting for your money and you would have a lot less material to use without the travel. Having said that, the travel encounters are laid out well and should be relatively easy to run. NS3 especially has a nice variety of different types of travel encounters, from dire sharks to winter wolves to shambling mounds. There are some different ecologies for you!
I like that Frog God Games (and it's predecessor, Necromancer Games), uses random encounters and give them more thought than as just a page filler. But if you don't like travelling encounters, this will bug you.
The bitter cold and harsh weather of the frozen tundra really comes through in NS2's travel portion and created an oppressing atmosphere.
SPOILERS - You've been warned.
If you don't like canninbalism in your gaming (I don't), NS2 has got it.
The mechanics for the final battle in NS3 are interesting. The CR of the boss depends upon what the characters did in the module before they got to the end. That is pretty neat. It also gives the GM a reason to (not necessarily overtly) encourage the party to explore the different parts of the module. It will matter a LOT. As in, a CR range of 11! I think this really makes NS3 stand out. It is clever, fair and impactful.
I found the final boss in NS2 to be quite a bit more imposing than in NS1.
NS1 and NS2 felt like Conanish adventures to me. Granted, I'm a big Conan fan. NS3 didn't feel that way at all. It's all viking, all the time.
I have only taken a quick look at Land of the Linnorm Kings from Paizo, but I'd think you could pretty easily drop the Northlands Saga into that part of Golarion; especially #3. Open Design's Northlands is on my want list: I can't comment on how these would fit in, but I'd guess easily.
SO..(SPOILERS OVER, Open your eyes)
The Northlands Saga starts out at mid level (I prefer lower level beginnings). I do believe that some of the future installments will be for lower level characters and I imagine it will be easy to string them together into a campaign.
That said, I have bought all three and think that they're worth the price of $4.99 per pdf. If you want to run your players through some cold weather adventures, NS1 and NS2 give you that eskimo feel and NS3 hits you with the viking stuff. If you've wanted to use some stuff from 3.5's Frostburn (a couple guys named James Jacobs and Wolfgang Bauer co-wrote it...), the Northlands Saga is the perfect opportunity.
If you're comparing these to paizo modules, they feel a little light. There's not as much to do. But they're also priced considerably lower. You're probably going to get through an NS module a fair bit more quickly than a pathfinder one (definitely if you drop the travel).
I'll be buying NS4 and hoping for the quality to continue. Kenneth Spencer is doing a nice job with these and lower level adventures will increase their usefulness.
Frog God puts a lot of thought into their products and the Northlands Saga are no exception.
Thanks for taking a look at Northlands Saga. There is definately more to come, now that the big hurdles are out of the way.
Big hurdles? At Frog God? Why, whatever could you mean?
:-)
I know that SoA is coming, but I put in a vote for a Pathfinder Tomb of Abysthor!