At the risk of sounding like a fangirl, i will say that i am rather 'tired' of hearing all this about the art.
Personally i think the art is beautifully done, and very detailed.
And as is mentioned above by Admiral, i think of course that once into the game, the mechanics will rule, much
as AI War does.
And to support KingIsaacLinksr note about DF,
As he probably knows, ugly or not, that clearly, anyone who has played DF will tell you it is an awesomely deep game, regardless of the graphics that is used. In fact after playing for a bit, it is difficult to think of the game using anything but the graphics they do. That is a testament to how much the people who play it love it.
And also I would say the comments on RPS shows the shallowness of posters to RPS forums who have not played Arcen games and try to understand where they are coming from.
Just my opinion, but I am getting rather 'upset' with all these naysayers.
-Teal