Munchkin Boxes of Holdingare designed to hold cards from any of the manyMunchkingames as those cards are a non-standard size. Each box can hold 500 cards, with one box for Door cards and one box for Treasure cards. Three themed versions of theBoxes of Holdingexist – one based on basicMunchkin, another based onMunchkin Cthulhu, and a third based onMunchkin Zombies; each version is packaged with two unique cards for the correspondingMunchkinset.
Munchkin Boxes of Holding Set 2changes this formula by including a third box large enough for all the Dungeon cards released as of mid-2013 and the Seals fromMunchkin Apocalypse, with room to spare for other items still to come. This set also includes three new unique cards, one of which will be a Dungeon.