Operation Flashpoint: Dragon Rising needs to be in that list. It was the worst ripoff/scam in history of FPS-gaming. Completely unplayable, consisting of 2 small maps while the advertizing promised sandbox-roam-free for hundreds of km2.
Not that you could play it anyway because it was made for dedicated servers (it even said so on the cd-case), but dedicated servers didnt exist at all for that game. The "lag" was the worst in any game ever making it unplayable.
It was nothing but a scam, a multimillion dollar scam at that.
Why isn´t Sion Lenton (the ceo) in prison? In any other business it would be straight to prison for a scam of that magnitude (selling millions and millions of dollars worth of something that doesnt exist).