I downloaded Gods and Kings yesterday and everything runs fine, no glitches whatsoever. But there's one thing that's weird or odd about it. I see a lot of YouTube videos and screenshots and it's all normal as well. But the terrain coloring is different compared to mine and the ones I've seen in the screenshots and YouTube videos. The terrain is oddly dark, like the grass is supposed to be green but its very dark dark green, even the sand is very dark.
When I say dark, it's not the low-brightness-setting dark, because it's on high. It seems to be the terrain and models as well. The leader videos are all normal. I have screenshots of this problem.