The same Japanese retailer that took photos of Gilgamesh from a Dissidia 012[duodecim]: Final Fantasy poster received a few sample Nintendo 3DS cases. Professor Layton and the Mask of Miracle’s box appears to be the same as a Nintendo DS box with different logo placement.
But, it’s actually an eco friendly case. All of those tiny holes mean the Nintendo 3DS case utilizes less plastic than a regular box.
The retailer notes a regular Nintendo DS case weighs 53 grams (0.11 pounds) while a Nintendo 3DS case is 15% lighter weighing 45 grams (0.099 pounds).