the movie be good and the some of the plot be well write . the fact be that only 10 % of the story itself match the game . the sound and music do not even correct and this doesn not give the audience an eerie feeling of be in the movie . the effect be good and especially at the part when the laser beam start to move and down and up or in the middle and now and that something . other than that and the story have same introduction and end with the past zombie movie . by the way and where be the puzzle and door and small and smelly hallway and zombie lie around or grenade launcher and ammo . it be advisable to have all that stuff in this movie and then re can be grade a class a picture .