I once played it so much that I could still see it when I closed my eyes to go to sleep....woops.
i hear ya! I was in my last year of University when Doom came out and my buds & I used to play against each other via the computer lab network..one night we played so long that the janitor locked us in the lab by mistake so we just kept playing till 7 am until he opened the doors again...man I can still see the look of shock on that poor mans face when he saw the five of us blood shot eyed zombies staring at him while he was opening up the doors:roflmao: