Just asking! Was building my map and i didnt like the fact of having to put loads of lights in the map. I'm wanting a very bright sunny map ! Cheers

Change the worldspawn settings.

When you are in radiant you click I think "N"  and then change the light settings there.

Hope this helped

- Chunkdogg9

right click in the 2d view and click add sun.

if you want to change the colour and brightness press n with nothing selected