The Game (film)/Headscratchers

The Film:

 * If the gunshots were all blanks and squibs, then how did the car window get bullet holes in it?
 * You answered your own question, blanks are what makes the muzzle flash from the gun, and squibs are the bullet "hits". They likely used the exact same method as a movie shoot would.

The Mind Experiment:

 * As soon as you forgot it you're playing. As soon as you think about it you lose. Loss must be announced. What happens if you break a rule?
 * You lose. Duh.
 * You seem to be forgetting the fact that the one possible option in the game is to lose it.
 * If you break a rule, like not announcing a loss, then you "cheated", which is worse than losing, morally speaking.