Unfortunately this game has on-line activation DRM, which is not stated on the Amazon website. I purchased the game on a chance, really liking the previous games in the series. When I received the package, I studied the package description BEFORE opening the case (as opening voids returns on software) and found on the description, clearly stated, that on-line activation is required for the game to work properly. That's fine, I don't want to get into the DRM debate, I simply want to say that I vote with my dollars and have made a conscientious decision NOT to buy these kinds of games when they require on-line activation (MMOs and games deliberately designed to play on-line are of course an exception) or support manufacturers who elect to protect their investments this way.
I wish I could have reviewed the game, but the manufacturer's decision to limit how I use a product I legitimately purchased has prevented me from giving a review. My "one star" is only because I cannot leave the ratings blank, with no stars.
Thanks to Amazon for recognizing their error in not fully describing that this game REQUIRES on-line connection to begin operation on their website, and thus allowing me to return the product for resale.
Anyone interested in previous games in the series, please look at them and consider purchasing them. They are fine games if you enjoy this style of gaming and I think you won't be disappointed in the other titles.