Makes the game from above average to great - no longer just a gateway game but rather a light strategy game that's easy to pick up but even experienced gamers can enjoy strategically. I'd consider this essential.
Brilliant game, dynamic, extremely unfiddly, and so many layers of strategy. I've only scratched the surface of what this has to offer and already I'm completely hooked. This is number 1 on the Geek for a damn good reason.