Re: My Players looted the room
I'm throwing my hat in with Hugh and everybody else who's basically said that you should have blown the whistle and reminded them what genre they were playing. I've done the opposite; I played so much Champions that when I go back to D&D, I tend to pull my punches and go for knockouts instead of kills. It's a matter of habit.
If, after you stop the game and verify that they remember what genre they're supposed to be playing, they say that they're still going through with it, then you can lower the boom on them.