Perfect implementation of the board game Settlers of Catan.
If you haven't played the board game, but enjoy board games in general - get the game. It's easy to learn and works extremely well in multiplayer.
Single player mode works as well as can be expected. That is, a game like this will allways be better when playing real people, and even better than that when playing real friends.
The XBOX version of the game looks EXACTLY like the board game. I happen to have the board game in two different versions. Standard version and the original German version of the game. I was delighted to find that you could download the alternate tile set as well - for that old school feel :)