I was thinking about mods the other day, and how certain moods are created. And, not surprisingly, I was thinking about that terrific sequence in _Aliens_ where the soldiers are first exploring the ruined moning facility.
It occurred to me that the main fear in that sequences comes from the possibility of something hiding around the next corner, or lurking in the vents, or somesuch.. and it could leap out utterly without warning.
Now, I've seen that sort of thing in games, of course, but usually such events are scripted. Usually, creatures have only a few modes: stand still, patrol a scripted path, or attack.
I was wondering-- is it possible to have that lurk-and-surprise behavior as part of the creatures' basic behavior?