I bought the extra dividers because all the reviews of cryptozoic games said they were necessary, but I didn't not find that to be true. I combined "The Hobbit" and its expansions into one box. Then I combined all three "The Lord of the Rings" games into one box. Then I combined all the "DC Deck-Building Game" expansions into one box (just the good guy ones, not "Forever Evil" which I consider a separate series). Through the process of combining all those games into single boxes, I did not need a single extra divider. In fact, more dividers would have made it impossible to combine games like the three "Lord of the Rings". I'm still giving it five stars for quality, but try assembling without extra dividers before dropping the money on them. You may not need them!