This storage system is composed of seven trays and is designed to not only hold the base game, but also the Hood, Above & Beyond, and Tracy Island expansions. It also hold premium sleeved cards. Much time was put into this product as one tray (which holds two smaller ones) is used to hold the base game while each expansion is modularized so that each can be integrated into game-play as you wish. Cards for the Hood expansion are designed to fill the small gap that other trays leave. NOTE: Although this system will hold the base game alone, it is designed to hold all the expansios. Thus, if using just for the base game alone, trays will not sit exactly as pictured and I would not recommend storing it on it's side (vertically).