The WarLock Dungeon Tile system solves many of the problems present with other tile systems. The WarLock clips allow players to construct rooms in advance and place them on the table as needed. 1in tall walls make it easier for players to move pieces around in teh room as they play. Offset walls provide you with the ability to place figures in any squre on the grid, without pesky corners eating into your play area. Experience a perfect, continuous grid throught he entire play space withour patented, modular, ultra-slim interio walls. Additionally, all tiles are reversible with wood design on one side and stone on the other for double the functionality! WarLock Tiles: Expansion Box I adds more of the essentials to build out your gameplay environment. More walls, clips, doors, and pillars to build more complex dungeons and scenarios. Fully compatible with all other WarLock Tile products. Set includes: 4x 2in Straight Stone Walls, 3x 2in Straight Plaster Walls, 4x 2in Straight Stone Interior Walls, 6x 2in Straight Plaster Interior Walls, 1x 1in Exterior Stone Wall Door, 1x 1in Exterior Plaster Wall Door, 2x 1in Stone Interior Wall Door, 2x 1in Plaster Interior Wall Door, 4x Stone Corner Pillars, 4x Wood Corner Pillars, 1x Inside Corner, Stone Wall, 1x Inside Corner, Plaster Wall, 1x Outside Corner Stone Wall, 1x Outside Corner Plaster Wall, 50x WarLock Clips.