First of all the game itself is good, really good. The AI and some economic behavior needs some tweaking, but overall it is one of the best games I've ever seen.

Unfortunately there are some points leading to the horrible rating:
- the game is quite demanding for Video-RAM. Even on an iMac 27" QuadCore i7 with 512MB VRAM you won't be able to set detail levels to more than medium quality in order to keep the game running smoothly.

- the copy protection requires a constant internet connection while playing the game. For most players having a broadband connection not a problem anymore. But what's annoying is that the game servers are often not reachable, meaning the game won't allow you to play. Having the game for about three weeks the servers were offline for almost FOUR days of playing hours.

- a known problem for the Mac version is a bug that sometimes freezes the game during video-sequences after a game ends or the storyline of the campaign mode. And even three months after the game was released still no bugfix available.