I played the game back in 1998 or whenever and thought it was pretty good as far as single player first-person shooters went. The world of SiN stayed in my mind so naturally I was interested when I came across a movie version when browsing video store shelves (more of a TV special - got to remember to check the running time when renting anime). On the cover there was a quote from a magazine "sets a new benchmark for game-related anime" which was good enough for me.
What troubled me as I was watching SiN was that the world had been completely dispensed with, Blade's assistant gets killed off in the opening scenes. It became apparent that the SiN character(s) had been grafted on to an independently written story. Blade was something of a detective in the game, in the movie he's just someone holding a gun. Anyone could have taken his place. On its own merits the story is average at best, suitable to be played on TV once and that's it (too boring to warrant being on DVD shelves worldwide in my opinion). Basically a SiN movie has never been made but if you like the look of Blade and want to see his likeness in an average 50 minute anime, then this is your ticket.