farcry 1? I think it had to do with snipers spotting you in a bush from 2 kilometers away.
They're snipers, if they couldn't they wouldn't be doing their job now would they?
Jungle limits your vision to a few feet irl
movement in brush + scope makes it easier, but of course this depends on density of brush....Plus the fact that snipers are a special force that have extremely good vision.
lol the mercs are all a bunch of mexicans, not special forces