The case looks like a large antique book wrapped in a vintage world map, but opens to reveal internal dividers for storing cards, and features a hidden magnetic closure to keep the book cover closed.  

Decks can be stored on their sides, which would accommodate up to 15 decks (5 per row), or they can be stored with the front of the tuck box facing out, which would accommodate up to 9 decks (3 per row). Cards can also be stored loose, with or without sleeves, or in any combination of the configurations mentioned above. 

In other words, there is plenty of room for all the current Ecologies card games available, as well as any future additions or expansions.