I purchased Biohazard Deadly Silence today for the Gameboy DS. It's really nostalgic to play the Playstation original on such a convenient little device like the DS. The improved features on the original are touch screen knife fights, swiping the stylus across the screen to stab or slice approaching zombies - while this feature doesn't add anything startling to the games original its a nice touch that adds a bit of punctuation for old tired hands at Resident Evil like myself.