Resident Evil, wha?! If they didnt call it Resident Evil then it mightve worked fine, but it had 0 to do with the video game.
It had Umbrella, the T-Virus, the zombies, Lickers, Nemesis, Chris and Claire Redfield, Ada Wong, Jill Valentine, Leon Kennedy, Wesker, The Axemen, The mutated dogs/crows etc... there's probably more, but it definitely had a lot of game elements. It definitely wasn't a case of World War Z where the only thing the book and film shared besides zombies was the name.
But like in the case of the first one, Resident Evil 1 (the Game) was basically 95% running around the mansion and grounds solving puzzles to unlock more areas... That would have made a horrifyingly boring film.
RE2 (Game)was a bit closer to the RE2 (Film) as it consisted of making your way across Racoon city, but in the game huge portions were spent at the Police Department, again, like the first one, solving puzzles and opening up new areas of the police department.
They really had to branch out on their own story wise, Which they did, while keeping enough nods to the source to still be recognizable as Resident Evil.
Admittedly these aren't great movies, probably will never even be considered good movies, but considering the source, a zombie shooter, all they really need to be are fun movies, which they ARE that...