Paint random tiles

To paint random tiles, use the random brush in the Tile Palette window.

Enable the random brush

To enable the random brush, follow these steps:

Open the Tile Palette window.
In the Brush Inspector section at the bottom, set the brush to Random Brush.

To paint random tiles, first pick the set of tiles you want the random brush to choose from, then paint onto the Scene view.

Follow these steps:

Select Add To Random Tiles.
Select the Pick () tool in the toolbar of the Tile Palette window.
Select individual tiles from the tile palette. Each tile becomes a new tile set, which is an option the random brush chooses from.

You can also set Number of Tiles to the number of options you want, then drag tiles from the Project window to the numbered Tile fields.
Select the Paint with Active Brush () tool.
Paint onto the Scene view.

Note: The tile sets for the random brush aren't related to the tile set asset you can use to create a new tile palette.

To paint groups of random tiles, set the size of the group, then pick the groups of tiles you want the random brush to choose from.

Follow these steps:

Set Tile Set Size to the size you want to paint. For example, set X to 2 and Y to 2 to paint a 2 × 2 group of tiles.
Select Add To Random Tiles.
Select the Pick () tool in the toolbar of the Tile Palette window.
Click and drag to select a group of tiles from the tile palette. Each group becomes a new tile set.

You can also set Number of Tiles to the number of options, then drag tiles from the Project window to the numbered Tile fields. For example, if you set Number of Tiles to 3, Unity creates 3 sets of 2 × 2 tiles.
Select the Paint with Active Brush () tool.
Paint onto the Scene view.

Property	Description
Pick Random Tiles	Enables creating tile sets by using the Pick tool in the toolbar of the Tile Palette window.
Add To Random Tiles	Adds a new tile set when you select a tile with the Pick tool, instead of replacing the existing tile sets.
Tile Set Size	Sets the size the brush paints with, in tiles. For example, if you set X to 2 and Y to 2, the brush paints a 2 × 2 group of tiles.
Number of Tiles	Sets the number of tile sets, which are the options the random brush chooses from.

If Number of Tiles is greater than 0, or you create tile sets using the Pick tool, Unity displays the list of tile sets and tiles.

Property	Description
Number	The number of the tile set, for example Tile Set 1.
Tile	The number of the tile in the tile set, for example Tile 1. To select a tile, drag it from the Project window to this field, or select the picker (⊙).