Lost Squad - is Source Engine based game about what happened to Barney Calhoun after Half-Life 2: Episode One events and why he didn't show up in Half-Life 2: Episode Two.
Physically-based skylight model with day/night, clouds & stars support.
No sky-spheres, this works with vanilla 3D skybox.
Simple to work with.
In-game editor included.
this looks so badass.
holy crap, this looks amazing! when is this coming out, we need this!
Wow! Fantastic!
another shot - Pp.vk.me
This actually looks like a consistent Day & Night cycle is even more so possible :)
Want see the gif.