Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Tile Tool Free.
Tile Tool v1.3.5 (Latest version)
Tile Tool v1.22
“If possible, please buy the package to support the developer”
TileTool is a easy to use editor extension, it includes a tile set designed to quickly be able to create game level designs.
Optimizing the tile meshes is easily done with a few clicks, significantly reducing triangles in the scene.
• Build game worlds and platforms in Unity
• Very low poly and suitable for mobile devices
• A wide variety of game objects and tiles
• Optimize with a single click, removing parts not visible by the camera
• 7 Styles of tiles and game objects.
• 1 Textures atlas for all game objects, optimal for batching and mesh combine
• 4096×4096 and 2048×2048 texture resolution
• Includes example scenes
Simple Mesh Combine
Simple Rename Tool
Compatible with Unity 5.1 up to new versions of Unity(2020+)
Support available for assistance if any problems should occur.
Based on 2D CC0 resources by Kenney.