If one was to list the most controversial games in the past decade, Killzone (the series) would definitely make it to the top 5. The first game earned the title "Halo-Killer" but proved to be a disappointment, while the second had a very bad start, due to the infamous "E3 2005" controversy. For the uninitiated, Sony showed off Killzone 2 with a video that was done to "PS3 specification", or in simpler terms, they believed that when the game was complete, it would look similar to the footage.
Sorry about the confusion but this article is not written by MSN, it is written by techtree.com. MSN just has it on their website.