I think it's quite good, quite well up there with Infinity that looks to be something of a runaway hit (albeit of still modest proportions compared with, say, WARMACHINE). This with the caveat that I've only played the 1st edition. The 2nd ed, on paper, streamlines the rules, sometimes quite a bit, at the expense of some character/flavour. It probably isn't bad to play per se, for example some points values look to have been adjusted toward making more sense. It's just a bit more beige now than it was.