Shout to 
This game was tremendous! Does exactly what it says on the tin ;)
It is a FPS that has the scare factor of Res evil, but its full 3D, with shadow\'s filckering lights & \'Boo scared you\' moments
The only games that I found that came close were Aliens vs Predator & Undying.
Saying that its still a traditional FPS so dont expect much emergent game play like Deus Ex.
