The video game was essentially a game involving two brothers going up against a street gang to rescue one woman, Marian. Here, we have some sort of futuristic magic business man crap, and Marian as a villian. So besides the fact that we have two brothers here, what did this have to do with the game?
shareMarian isn't a villian, she's played by Alyssa Milano, they completely changed her look though which is why I see your confusion on that issue. As for the "magic business man" played by Robert Patrick, he is supposed to be the Shadow Boss, which was Jimmy in the game but they made him someone else for the movie.
By the way I do think this movies sucks, big time. For some reason I just felt like checking out the boards.