I've been doing a lot of thinking about Shinji Mikami's new videogame Project Zwei that is supposed to be PURE SURVIVAL HORROR. A game that will return the genre to its roots. Well it must be fun to think of all the little things that can scare people and have the ability to carry that forth (praxis) through the superior artform of a videogame. So this is a thread where we discuss and come up with scary shit to put into videogames -- just like what Mikami & co are coming up with for Zwei. This is a thread on FEAR and TENSION.
Things that induce fear and tension:
Music
Whether music should be turned on or off in survival horror game Resident Evil was deadlocked at 6-6 on sydlexia forums
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Location - Air / Land / Sea (most vulnerable)
Sound Effects
Refers to footsteps, breathing, screaming, thunder claps, etc.
Large Creatures / Large Groups
Think the Eel in Super Mario 64 for the former. Think the villagers in Resident Evil 4 at night time for the latter.
Vicious Hits / Attacks
This is the fear of getting absolutely destroyed on screen by a creature. Games like Shadows of the Damned messed this up by having a huge monstrous freak with a giant whirling fan blade of death for a hand not tear you apart on contact; it just lamely damage stunned you briefly.
Chase Sequences
This is the tension of distance between you and the force of adversity. One cool thing in Deadly Premonition was the enemies clammering toward you and teleporting / shifting closer to you when being shot at.
SA-X in Metroid Fusion.
Lighting
Time Pressures
Jump Scares
This is the sudden appearance of a creature. A break from stasis (peace). The dogs in Resident Evil are the obvious example here. I also read that Dead Space menu didn't pause the game as expected so this lead to scares where there should have been stasis (pause screen).
Foreigness
Having hostile enemies talk in a foreign language to you-- RE4 -- creates a tension of the unknown.
Limitations - Power, Health, Items, etc.
See Clock Tower series where you are powerless. The opposite of this would be near end game Leon in RE4.
Hallucinations
See Eternal Darkness' sanity effects. One thing that did not get added into RE5 that was interesting to think about for survival horror was hallucinations by heat exposure.
Also, RE3.5:
http://www.youtube.com/watch?v=RUFM3EmXMJY#!
Fear of Loss
[Feel free to add more categories to the list]