Добавил: The DSystem
I noticed when I played Doku's Survival Mod that the mod didn't just add the "laser"; it merely altered the flashlight texture to resemble a single red dot that behaves like a laser when coming from the flashlights on weapons. Here, I have a trio of alterations to the normal flashlight: One green for faux-night-vision, one red, and a widened version of the default flashlight beam. Screenshots show the three in comparison to the normal one on No Mercy's Sewer Map outside the safehouse door. These will work in both L4D1 and 2, although for Dead 1 you'll need to use Notepad++ to edit the directory so the game uses the custom lights instead of the default.
See the green light in use at