Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Nostalgia 2: 2D Tile Map Editor Free.
Auto tile available Nostalgia 2 v2.1.6
Nostalgia is an editor extension asset that allows users to create a map in the auto tile old-fashioned style.
You can take advantage of the existing assets of the same standard auto tile.
– Tiles are connected automatically to each other.
– Draw calls can be reduced to use the tile set.
– You can place a tile as a paint tool.
– Collider is also generated to match the tile.
– Fast tile animation by shader.
– Can be placed and removed in run-time.