Pictures from games? Yes, exactly, somebody deals about it, it's real pictures from games (not screenshots!)
Recently I found a website which provide such print screen pictures called Creative Uncut. However, according to the website, most of the pictures are scanned from a artwork or fan-art collection books.
Pictures from that website are scanned through books, and edited into more quality resolutions.
A great sites for gamers which are fans for some of their favorite games.
Feel free to visit: www.creativeuncut.com
Here's some from it, take a look: