Now, I'd heard about it before, but never checked it out. No time, really. However, last night I got to see it in action, and if you liked Diablo, you'll like this. It does what the diablo games did so well, letting you run around and kill stuff, smash things, and have a good time without having to worry about much of a storyline.
It also avoids all sorts of unnecessary choices for a game like this. You get to pick one of 3 characters, and one of 3 animal companions that have some interesting options of their own. No picking hair color, or skin tone, or even what sex you are. Pick a class and play!
Then you go, kill stuff, get XP, better items, and kill more stuff.
It is, in some ways, very old school. And yes, it's a little more cartoony than Diablo, but does it matter in play? Nope. Not a bit.
So go! Download it now! The price couldn't be better, and you also get the soundtrack for free, which I think is a nice touch.