Happened to luck my way into a Torchlight 2 beta key today and had the chance to play it a bit while taking a break from working on a paper. If you're unfamiliar with Torchlight, it's a Diablo "clone" made by Runic Games, which I believe is made up of many of the old team members that made Diablo in the first place. Torchlight 2 feels really similar to the original so far, with the major additions of a much more expansive world (think going from Diablo in just Tristram, to Diablo 2) and the addition of multiplayer.
Playing the Embermage class and having a good time so far. Only had the chance to play up to the first boss tonight, but had a good time. Was nice and easy to just jump into a game and catch up to someone that was working their way through the first zone and start killing stuff with them. If you're a fan hack and slash games like Diablo, it's a great game to check out, the original is $15.00 on steam and is single player only (demo available), or you can pre-order Torchlight 2 and get a copy of the first as well.