Ok, a few words about the DRM before I say something about the game. You have to activate it via the internet and it has a 3 install limit, so you can install it on up to 3 different pc's. Changing your pc's components will use an install. As I'm a laptop user this isn't a big deal for me, but it will be if you're in the habit of frequently changing your pc configuration. There is no install revoke tool at present but I imagine one will appear somewhere down the line once the game is older.
If you run out of installs you can contact support for more. Not ideal, and I'd really rather not see DRM in the game, but on the plus side you don't need the disc in the drive to play or have to be connected to the internet. Anyway, make your mind up about whether the DRM is a deal breaker or not.
As far as the actual game is concerned, it's a superb example of the city building/economic strategy genre. There is a single player mission based campaign, highly configurable sandbox mode with AI opponents, as well as a few scenarios. Graphics are lovely and the game is smooth and responsive even on my fairly average gaming laptop.
The resource and supply chain is complex, with loads of different types of resources to produce and convert into lots of other types of goods and lots of different types of buildings to construct. Truly, if you're a fan of city building/economic games then I can't recommend it highly enough, and will simply say that I played it for 5 hours straight last weekend.
Still, too bad about the DRM.