Korean edition. It has a black sheet of paper with the Steam code and other information. It may be a separate sheet, or just the back of the manual sheet.
Pre-ordered copies came with a large desk mat sealed in plastic, with a sticker stating it was made in China.
1. Contents with pre-ordered copy
4. Disc 1
5. Disc 2
6. Disc 3
7. Front of manual
8. Front of mat
9. Back of mat
Thanks to bleader750 (images 1-9).