Like Kaz, it's extremely buggy for me. About every 10 seconds everything freezes for 5 seconds, and then suddenly starts jumping around. Fix that and it might be half-decent. Mac w/ Firefox here.
Very polished game, well above what is typical for a flash game. Yes, everyone, this isn't quite as good as Advance Wars or any other retail title, but it is by far the best flash game in this genre that I have ever encountered.
On my Mac with Firefox 3, the keyboard commands don't work at all. And it's not like the game doesn't have focus; I'm clicking on it all the time! The interface is far too lousy for it to be playable with just the mouse. The rest of the game is okay-ish.
I'm completely at a loss why everyone seems to think this is such a great game. It's got a very polished interface (which counts for a LOT) and pretty good graphics, but the gameplay is just like every other old turn-based combat RPG. It's not like there's much role-playing, character development, or even storyline. Who wants to grind in a flash game?