This is on the back of a little 2 page booklet that came with doom 3.

"A note of caution: Doom 3 is a terrifying sci-fi horror game experience. It is not recommended for the cowardly or the faint of heart. However, for those who dare to face doom 3 as it was intended; lock your dor. Turn off the lights. And turn up your sound.

Enjoy Doom 3"

No fucking thanks, lol. I still found it funny.