Frictional Games is a company creating very nice horror games like the Penumbra Overture trilogy.

Recently they open sourced the code of:
- Penubra Overture (https://www.youtube.com/watch?v=I0EN3JIxYw4)
- Amnesia: The Dark Descent (https://www.youtube.com/watch?v=u1nY_5-UrY4)
- Amnesia: A Machine For Pigs (https://www.youtube.com/watch?v=2ZV6Fwx_Sf4)

From a look I had on them they seem to use SDL 1 or 2, OpenAL and a bunch of other stuff. It would be great if someone who did port games previously, could have a better look if they are possible to be ported.

Come on guys, don't be scared. :D :D :D

The code can be found at https://github.com/FrictionalGames

@walkero
Only took a quick 10 minutes peek. Code appears to be straight forward rather old skool C++, this by itself shouldn't be a problem at all.
However, there's this big "dependencies.zip" which contains a ton of precompiled libs. Some are no problem (e.g. zlib, SDL, OpenAL, libogg), but some others, well, you'd have to check.
And of course the question remains whether the shaders can be handled by Nova.