Game is great but a possible problem with amazon download process,
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This review is from: Supreme Commander [Download] (Software Download)
The game is solid like several of the reviews point out-awesome graphics, large scale (epic) RTS, and flexible unit combinations set it apart from many other games. The reason I'm writing this review is because of the issue I had with running the game after download and figured it could help some people out. I kept getting a message saying " insert original CD/DVD", which I definitely didn't have because it is a download. I asked amazon about it and I think the problem is beyond a simple download problem so they couldn't really help me. Therefore I got the game from Steam instead by entering the CD key provided by Amazon, and had no issues after that. Plus you get the expansion for free.