I can picture the plot meeting;
"First we have to dispence with the whold hell thing, that's too risque"
"you mean good?"
"oh yes I mean that's too good"
and then
"So basically it's a rip off of Aliens?"
"yeah"
"I have an ideas, you know the thing in aliens, how the real monsters are the corporate scientists, exposing the innocent settlers to aliens deliberately and such?"
"yeah"
"What if instead of them being metaphorical monsters, which is too risque..."
"you mean good sir"
"yes good, they TURN LITERALLY INTO MONSTERS"
"what about they do that by injecting DNA into them?"
"BRILLIANT! That works with badger DNA right?"
"eeer yes"
"And then if they have the evil gene THEY TURN INTO MONSTERS, and if they don't they heal fast and can do kung-fu!"
"exactly"
"of course none of the scientists will be good, they're all have the evil gene, because you know they're all evil"
"right, science IS EVIL"
"Oh so where Did this all come from, this new gene?"
"from another race of humans that lived on MArs, because you know humans can live on mars..."
"superb, except, you know, it's meant to be based on the game..."
"oh nearly forgot, jam in some first-person-shooting in or something, but make sure that losses the very little tension the film already had"
"Excellent, it's a wrap!"
My persoanal favorite line was "If they're soo smart why are they soo dead", or "you should spend more time looking through microscopes rather than sniperscopes!"