When i add a jpg texture it turns out brighter when i play the map. why does it do this and is there any way i can fix it?

The default gamma setting is 1.25 iirc and most players even raise it further..

Have lit your map yet? If a map has no lights at all, the engine will render everything fullbright.

oh, is that why. I haven't got any lights. Thanks for the help. Another question when i try to add a flag it works on Gtk but doesn't show up when i play nexuiz, is there a reason?