Our organizer for Dinosaur World is composed of fifteen trays and will hold the base game and the Water, Hybrid, and Ice Age expansion packs all within the main game box. There are four small individual player trays (holding the various player starting pieces) for easy distribution at the beginning of the game. There are removable dinosaur and resource trays or quick and easy placement right besides the board for fast game set-up. You can view the pics to see how the various trays integrate with the various boards and manuals. There is a picture at the end of the line up that illustrates the progression.