分享最好用的AllSky 3天空包，包含各种各样的天空。

Requires Unity 3.5.7 or higher.

A palette of well over one hundred skies!

For lighting artists, environment artists and indie developers looking for a wide suite of skies to light their environments.

Lighting from day to night: Twilight, sunset, multiple times of day, multiple times of night, skyglow.

Many weather and cloud types: Clear, overcast, summery, stormy, autumnal, hazy, epic, foggy, cumulus.