Need some emotional games on Steam

[snakemaster2389]

I'm looking to see if there are any games on steam that invoke emotion or have a really good, emotional story. Im not interested in Dear Esther. Some of the games that I already have or played: Lone Survivor, Vessel, Braid, Limbo, Amnesia, Bastion, Call of Cthulu: Dark Corners of the Earth, Bioshock, Walking Dead

I know its a bit of an odd request and sometimes hard to find but I just want to play a game that has pretty good gameplay in it and yet the story, atmosphere, mood of the game is very emotional and dark. So if you have any suggestions please feel free to list whatever is on your mind. It has to be Steam only games or mods.

 

[Megazell]

The Cat And The Coup.

 

[Scorch]

Indigo Prophecy, I thought, is fantastic.

It's by Quantic Dream, the same people that did Heavy Rain.

 

[clonesniper666]

Penumbra was pretty good it is wry similar to Amnesia.

 

[crystalklear64]

Metro 2033 is amazingly atmospheric which makes it emotional by way of drawing you in. If you're distanced from the game and don't get sucked into the atmosphere though its just a 2spooky FPS.

Also you need a decent computer.

Also why does it have to be on steam?