I had to learn how to produce tile maps assets for unity

i had to first create a PNG in Photoshop with all the options. For example here is tile maps for the Backgound Grass.

setting how large each tiles where drawn, unity will slice them and make them ready to be used and draw aback ground as a tile map.

Road converted to Tile maps, They would be paced on a layer on top of the ground so are no empty squares. For the background, I used a colour on the main camera instead of drawing in all the ground.

The Building converted to Tiles Maps.