Salem, the scary hardcore permadeath crafting MMO from Seatribe and the devs responsible for Haven & Hearth? Head to the official Salem website and score a beta key while you can. There were 140 of them when we checked a few minutes ago, so make it snappy!
You can also read through Massively's multiple hands-on impression pieces to see if Salem is up your alley.
[Thanks to Nick for the tip!]