Nightvision Goggles cost $1250. When bought, they are passively equipped. The default button for activating and deactivating the nightvision goggles is N.

Activating nightvision goggles allow the user to see in total darkness by brightening up dark areas and giving the screen a green monochrome tint. Unlike the flashlight which possesses a beam, nightvision goggles will not give away the user's position. But activating and deactivating the nightvision goggles does make a loud, distinct sound audible to all nearby players. In normal (bright) light, the goggles further lights up the player's view, blinding the player's vision in many cases. Activating nightvision goggles may reduce performance due to extra graphical load (especially on GoldSrc games and older PCs).

Nightvision goggles brightness can be adjusted with the command -nvgadjust and +nvgadjust to decrease and increase the brightness, respectively.

It is not possible to drop the nightvision goggles for other players, and it will not be dropped when a player equipped with it dies.

Bots can see other players clearly in dark areas all the time without it. Thus, they will never buy it.