skys and backgrounds

how do you set the sky for a game?

In the triggers.

Go to Enviorment - Set Sky.

Or type Set Sky in that search thingy.

[glow=strength=5,color=green]
Or you could just simply go into Map Properties and then
click on the tabs and find sky and then you just select
which one you want, instead of making a trigger for it. :D
[/glow]