You guys are rating it too high, it's a solid B-.

Pros:
-The BFG is totally worth it.
-The redneck guy is absolutely hilarious/creepy.
-The first person scene is worth watching the entire movie for.
-The Christian guy that commits suicide.
-It's more like Half-Life than Doom. (During the elevator sequence at the end I found myself saying "welcome to Black Mesa labs..")

Cons:
-If you are a Doom fan, you will criticize it a lot.
-If you get headaches from bright lights, you will hate the flashlights in this film. But don't worry, they all magically break within about 25 minutes of use.
-The ending is gay.
-Not enough demons/too many scientists.
-Genes that make you good or bad? Wow. Dumb.