This storage system holds not only the base game but also the Tribes & Prophecies expansion. It is composed of (10) removable trays to make game set-up and tear-down extremely easy and fast.Trays are designed so that those that hold commonly used resources (ie corn, stone, crystal skulls, etc) can be placed right next to the board. NOTE: This storage system is *only* meant for those that have the expansion and have retained the expansino box as that box is used to store the game boards and manuals, leaving the main box to house the insert. This insert was made in conjunction with Top Shelf Gamer. You can obtain the game and accessories here.