never passed out from gaming ..
although at a lan party once (with 700 people) for 4 days ..
I didn't sleep at all and started to hallucinate on day 4, and shadows began moving and I got tunnel vision .. but I needed to focus on the game .. so all around the screen went completly black, all I could see was the screen .. and all I could move was my hands .. so I continued playing as it didn't affect my reflexes or anything!
when the party was over my gf came to pick me up, and just stared at me .. "Rosbjerg .. you are completly gray!!" and I looked down, my skin had turned greyish white .. when I came outside (completly clouded) I couldn't open my eyes because the "sun" was too bright .. she had to walk me to the car because I couldn't see!
sunday night I went to sleep .. woke up a couple of time, but slept all the way to tuesday!