I haven't seen a thread on this yet, and I did a search, so in a manner consistent with my love for all games horrific I present Slender for your consideration.
Slender is a free horror/exploration game developed by Parsec Productions
based off of the Slender Man myth
of Something Awful fame. Rather than trying to write a synopsis that doesn't do it justice, I'll refer to the one they wrote for themselves:
Slender is a short, experimental horror game in which you must travel into a dark woods at night, with a simple goal: find 8 pages that are scattered across the woods. But as you are looking for them, you are being stalked by an entity that grows more persistent and relentless as each page is collected, an entity that you cannot even look at for long, let alone fight. Your only hope is to collect all 8 pages before it catches you...
I know some people think that this game is a cheap thrill, and that it just kinda relies on jump scares to get the better of you, but I haven't been this freaked out by a game in a long time. Considering the cost of admission, the simplicity of the concept, and elegance of its execution I can't help but recommend this game to pretty much anyone with the stomach for a good scare.
Slender was developed with the Unity engine, which means that it is available on Mac OS X and Windows. The game is available on the fansite slendergame.com
and is currently at v0.9.6 for both platforms. The game itself can be a little choppy, which is frustrating considering that it is not a graphical powerhouse, but it runs well enough on my 2009 Macbook Pro as long as I keep the settings low.
This concludes the non-spoilered parts of the OP. Below are some tips and videos about Slender that will probably make it a little easier and less terrifying off the bat, which I would recommend against reading if you have never played the game. Honestly, looking for a map online is a good way to figure out how to collect all eight pictures, but experiencing the disorientation and horror of exploring a dark forest is pretty awesome.
One freebie, non-spoiler tip I will give you is this: there is no way to pause the game. If you hit esc looking for a moment of respite, you'll have to start all over again.Map:
1. There are 10 landmarks and 8 photos.
2. I usually explore the centre of the map first so that I can get the tanks and bathrooms out of the way. They're convoluted enough that you can spend a lot of time looking at them before finding a picture (if there is one in either location), so getting those ones before SM gets really aggressive is a good move.
3. Apparently, spamming the sprint button draws more attention to the player, so sprint when you need to sprint and walk when you don't. I haven't confirmed this for myself though, so feel free to disregard that comment if you believe otherwise.
4. If you see SM, look at the ground and run the fuck away.
5. If you're in a position where you can't run the opposite direction from SM but you're far enough away that it won't get you, look at the ground. The static will usually dissipate and you can continue.
6. Apparently, if you find a picture in the tunnel there wont be one on the gas truck. I can't confirm that is true though.
7. SM only shows up after you collect the first page or enough time has passed. You don't have an infinite supply of free time before SM shows up, but if you are so inclined you have some freedom to explore before the drum beats begin. If you're the sort to draw maps, I would suggest using this time wisely.
I still have not gotten all 8 pages, but I'm trying. Lately I have been playing it with a co-pilot that guides me with the map that we drew together. I'm starting to get good enough that I don't think I'll need it anymore, but it's good to still have someone around. Lemme know what you guys think!