I picked this up on Steam Early Access yesterday; I had wanted to Kickstart it, but I was unemployed during the drive, so I was unable to.
Darkest Dungeon is a Lovecraft-tinged medieval Rogue-like with a really unique "Stress" mechanic--in addition to managing your party's hit points, your heroes gain stress from crawling through undead-infested dungeons, which can lead to inter-party conflict and even total breakdowns.
I've done pretty well thusfar--I played last night for about 4 hours total, with no fatalities and no failed quests. Party balance is incredibly important, as is position within your party. It's a real challenge, but a ton of fun with great atmosphere; the voice-over alone is spectacular!
It is on my seriously-look-at-because-it-really-strikes-a-chord-with-me list, I need to find a few more APs of it before I go ahead and purchase it though.
There are quite a few online right now. A fellow named NorthernLion has a fairly long playthrough, and is part of a larger network of people who are also playing (whom he uses as his various characters' names). They're pretty quality.
Looks like a good game, but as I do with most steam games, probably won't pick it up till there's a sale. Getting cut from 40 hours a week down to 15 or 20 is rough and no excess money for things I'm only curious about. Need an absolute interest in something, like I have with SotM, to buy things right away.