Quote from Darkylight on June 29, 2011, 1:34 pm

You can use custom skins/textures for your mod and i can help you if you need, some blood, dark chambers and silent ambience music its perfect to horror, extrange voices and sounds. You can use gravity and world portals. Make a blood cube or blood turrets, and make conversations with turrets like:
turret 1: I think I saw anybody more to kill.
turret 2: That will be fun.
turret 1: Bloods is sweet.

etc...

Flaming is easy and cool, you can use new theory things like "dark things" and "light things" where dark hurts and light destroys light, for example a dark door, you cant touch it and you need to use a mirror with lights to change it to light, etc...

Broken dolls is a good idea to make a horror theme. And more, you need surprises, inexplicable things and traps, traps more sadic than glaDOS and wheatley. I think is a good idea but you will have muuuuch work good luck.

Quote from Marise on June 29, 2011, 3:01 pm

Fun concept. You could probably do a lot with lighting. Lots of contrast, creepy shadows. Red or eerie yellow tinted lights. Maybe use lasers to achieve some interesting looks.

As the above poster mentioned, surprises are good, too. Hidden doors opening unexpectedly, complete with sound effect to startle the player. Lots of corridors where you can't see what's around the bend.

And don't forget all the decals of crumbling and water damaged walls. I think concrete walls would be good for this map.

Quote from Darkylight on June 29, 2011, 3:56 pm

And you can use trigger_teleport to make when the player complete the chamber it changes with destruction, or blood or a message in the wall, i dont know, for make it scary you need to make anybody trying to follow us and kill.

Quote from Marise on June 29, 2011, 4:26 pm

Thought about this some more... I think subtlety is key here. Hints of something frightening behind the scenes, but nothing too overt. The best horror films never show you the monster (in my opinion).

Oh, and I'd use the rusted cube skins for this. Nothing should be bright or clean looking.

Quote from MasterLagger on June 29, 2011, 5:04 pm

All good ideas, I remember hearing an unused GlaDOS quote saying something long and ending with: "I'm going to kill you, Chell." I'll stick that in the map. Also the "surprise" room could be covered in blood that says "surprise." As for the turrets talking, I'll used the "skeleton" model of the turret.

Edit: To clarify on a few things, the main character/Chell will still be in Aperture Science, however this is more of a "What if" situation. What if GLaDOS was more sadistic? What if the traps were more threatening? Anyone that's heard of the "What if...?" Comics will know what I'm talking about. I'm just trying to make everything scary, but to keep it Portal 2 style, no dolls and stuff like that.
One other idea I forgot to mention is GLaDOS peeking out of a wall and then the wall shuts itself. Maybe bring back the "She's watching you" painting.

Quote from MissStabby on June 29, 2011, 5:34 pm

there are also some creepy soundtracks in the portal OST, like the one where you hear ratman freaking out in the background. or the one you hear in the abandoned part of the turret factory... with all kinds of turrets cut in half!

Also having a random panel popout/crush something close to the player might also scare the crap out of the player.

And another thing that you could use, most of the panel arms have 3 skins, one displaying the famous cyan colours, but also a red one and a dark/off one. you can hide things from the player with a black skin, and then turn the skin to red when everything starts to move.

Quote from MasterLagger on June 29, 2011, 5:41 pm

Yeah, that's a golden soundtrack. Before I forget again, I'm also planning to add special triggers in the map. For example, the post I made about GLaDOS peeking out of the wall, I could add a Crusher that comes down almost hitting the player when the player goes to examine the wall GLaDOS was looking through.

_________________ o
VVVVVVVVVVVVV T

Quote from WinstonSmith on June 29, 2011, 7:52 pm

Just putting this in here:

I can honestly say that the single moment in Portal 2 that freaked me out the most was when GLaDOS began humming "The Bear Climbed Over the Mountain". Almost genuinely disturbing, and I'm not even sure why.

Quote from MissStabby on June 29, 2011, 8:35 pm

you could also try to have a crusher panel "stalk" you (popping up beneath some panels that open up slightly, and closing fast when the player looks at it)
be sure to add some red omnious light to the room behind the wall/floor/ceiling.

Also you could do a "upside down" room where everything that should be on the floor is on the ceiling, along with a nice and complicated puzzle to solve

another thing you could do is to let panels assume a chaotic position, like when glados got detatched and before wheatly got attached. (or you could just copy that very core room)

And dont forget to put "did you know that people with a guilty concio.. MEEEEEEEEEEEEEEEP... oh did i startle you?" to the list of things she says