I have two eyes and one mouth,
both my eyes are hallowed out.
My mouth won't let me talk, yet
my eyes will have you shocked.
For though air is what's inside,
I'm one reason why many died.
What am I, that causes doom?
Here's a hint, I'm in your room.
OK I found the answer, it is an actual game:
For the hitori, see the other answer
Note: Assuming this is correct: I certainly will not make new one before the weekend, and I don't have the rules of this game.