Build an isometric city section using the blocks. Only base blocks (brown bottom) can be placed on the ground. For buildings, start with a building base block and then build up using the mid-section and roof tiles. Max 5 layers to a building. Arrow keys or arrow buttons to scroll through available blocks. Click to select a block, then click on grid to place it. Delete placed blocks by clicking them either with "x" held down, or after selecting the trash icon (at end of the available blocks). Full screen highly recommended.
Just discovered https://kenney.nl/ Wonderful (free) game assets. This project showcases the isometric tiles. To do: - improve the block-selection user interface. - change the way placed blocks are recorded, to enable import/export.