That's a real steal for LoG. If you don't have it, buy it nowish!
Special Summer Gem: Legend of Grimrock 50% off
http://www.gog.com/news/special_summer_gem_legend_of_grimrock
They are different. You do not have pages and pages of knobs to adjust in CK2.
Sure looked like it to me.
I can confirm there aren't any. In fact, I don't think there's a single slider in the game.
I've already fallen victim to some of those summer deals. I grabbed Spellforce: Platinum Edition and a crpg called Numen: Contest of Heroes for less than $6 total.
Numen looks like a cross between Gothic and Titan Quest. Anyone familar with it?