The Core is a total conversion single-player mod for Half-Life. Survive the disaster as Maurice Andrews, a low level engineer stationed in Black Mesa during the events of the resonance cascade. Seemingly trapped, Andrews must fight his way to the surface to survive.
Constantly working underground had started to inflict severe psychological damage upon the Central Administration personnel, so the suits up top decided to fit these artificial windows to brighten spirits. Their cool blue glow doesn't quite capture the warmth of sunlight, but it's better than the framed oil painting of Breen which used to hang there.
The Black Mesa legal team advise me to point out that I have never seen the film Resident Evil. I've never even heard of it, in fact.