This insert holds the base game & Suburbia Inc expansion. The main insert lays on top of the rule books, larger triangular, and player aid boards (they could just as well be placed on top of the insert). There are (5) smaller removable boxes designed as such: 1) Holds the main "A, B, C" tiles, blank, and last turn tiles - 4 sections. 2) Holds the starting player tiles and bonus tiles - 2 sections. 3) Holds the expansion - 3 sections. 4) Holds the coins - 3 sections. 5) Holds player tokens - 1 section.