This page describes how to create tile assets in Unity. You can create a tile asset directly from the Unity Editor’s Assets menu, or have Unity automatically generate tile assets when you drag spritesA 2D graphic objects. If you are used to working in 3D, Sprites are essentially just standard textures but there are special techniques for combining and managing sprite textures for efficiency and convenience during development. More info
See in Glossary onto a tile palette.
Refer to the specific tasks for either method:
You must install the 2D Tilemap Editor package to have the option to create tile assets in the Assets menu. Install the 2D Tilemap Extras for additional types of tile assets.
Note: These packages are part of the 2D feature set and are automatically installed if you select the 2D option when creating a new project.
To create empty tile assets in the Unity Editor:
To automatically generate tile assets in the Tile Palette window:
Assets
folder directly onto the Tile Palette window. The editor will prompt you to choose a save location for new tile assets.