Probably the game adaptation the took most seriously.
Almost every game movie feels like some tongue-in-cheek by-product, where it feels like they KNOW they are adapting some silly quarter-chomper and so the action must obviously reflect it, or at most they'll get it most superficially and make a parade of popular characters/moves/etc... out of it, which is neither a good movie nor a good adaptation.
This is one of the few movies which, i think, feels like a movie in its own right, and clearly had a TON of effort put into it. The cast, the production, everything, you can tell they took it seriously and actually wanted to make a proper film instead of a quick cash-in.
Maybe this is where the VG-movie industry matures? (I like the RE movies, but please, those have each time less and less to do with the games, and are little more than a beat-em-up with zombies...albeit a fun one)