This is a warning post. Previously I mentioned Command and Conquer: Red Alert 3 in my Strategy Plus post as a good Real Time Strategy game. Well, I forgot to mention one little detail. Digital Rights Management. What is it? Its a monitoring rootkit (similar to a virus or piece of spyware) the game installs on your system to "monitor" your use of the game and make sure that you are not pirating it.
RA3 seems to run well in a majority of cases. The best bet is to buy it if you have a basic 'stock' model of a computer, while a custom built computer, as with all games, may have more issues. Apparently mine had an issue. Will yours? Well...that's the question.
And, in retrospect, if you can play Red Alert 3, it is really worth it. Tim Curry is hilarious as a Russian Premier, and the game is really fun. Just...watch out.