The story is completely different from the video game. I liked that. You don't know whats going on and how it is going to end. Although it has everything it needs to be a "resident evil". Ubrella, S.T.A.R.S, t-virus, zombies, lickers....an the story takes place indoors. That gives you the feel of resident evil's 1 mansion. The screenplay is good and comparable to resident evil's 1 game, for example there is a traitor who walk among them just like Wesker!
It could be more scary with suspense and one or two riddles like the games.
The movie ends perfect for an excellent sequel, raccoon city seems to be dead! Everything is destroyed, blood everywhere and milla jovovitch alone with a shotgun in her hands!