Call in. A single player mod which plays out at the same time as Gordon and Alyx flees the citadel in Ep1. You take the role of a rebel soldier on a mission to retrieve information regarding the super portal to aid in the building of Dr. Magnussons rocket.
This is the outdoors nighttime environment I'm currently working on, might be a little dark, I'm still working with the lightning.
Seems more like a cloudy day than nighttime, its still fairly bright D:
These pictures looked much darker when i looked at them, weird.
It's just the skybox. Find one that is almost black, with the moon showing, and it will be perfect. I really like the atmosphere so far.
Edit: Actually, you still may want to make it a little darker too.