Check it out!
http://www.moddb.com/mods/aberration/videos/aberration-part-two-features


In Aberration Part Two, there have been some small code tweaks to the mod to give it a more immersive feel.

First thing, is a vignette effect. Vignette is the blackend/dark corners of the screen that simulate the vision of actual eyes.

Secondly, a small but noticeable view bob was added to again, add more immersion.