Scariest game imo is AvP2.
DooM 3 is scary as well but it gets predictable after a few levels.
resident evil (bio hazard)
resident evil-remake
resident evil 2
resident evil 3
resident evil: code veronica
resident evil zero
silent hill
silent hill 2
silent hill 3
silent hill 4
project zero
project zero 2
forbidden siren
hell night( dark messiah)
alone in the dark
other-please specify
Scariest game imo is AvP2.
DooM 3 is scary as well but it gets predictable after a few levels.