Use the Box Fill tool to fill an area with duplicated tiles

Automatically fill an area on the tilemapA GameObject that allows you to quickly create 2D levels using tiles and a grid overlay. More info
See in Glossary with selected tile(s) by using the Box Fill tool, which duplicates the selected tile(s) to fill the area. You can also use the Select tool to select tiles and then use the Box Fill tool to fill an area with them.

1. Select the Box Fill tool from the toolbar, or press its shortcut key U.
   

2. Select the tile or several tiles in the Tile Palette window that you want to fill an area on the tilemap with.

3. In the SceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
   See in Glossary view, click and drag the Box Fill tool on the tilemap to select the rectangular area you want to fill.

4. Release the mouse button to have Unity automatically fill the selected area with the selected tile(s).

Additional resources

• Essential tilemap steps and tools
• Active brush
• Tile Palette preferences reference