Checkout AutoTiling - A Useful Feature for your Tilemaps:
Unitys Tilemap system makes it easy to create grid-based 2D levels and worlds. Without any coding you can draw tiles onto a Tilemap. With additional components like special colliders you can fastly create a usable prototype of a 2D game and enjoy a lot of cool features. The Tilemap system can be installed via the Package Manager and is pre-installed on a 2D project, selected via the Unity Hub.
2D Movement with Unity New Input System (Playlist):
The Tilesheet used in the video:
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Timestamps:
00:00 - Create Project / Install Package
00:30 - Create a Tilemap
01:13 - Create a Tile Palette
01:50 - Prepare the Sprites
02:49 - Fill & Edit the Palette
03:43 - Draw Tiles
04:15 - Creating a Top Tilemap
05:04 - Tilemap Layer Ordering
05:20 - Tilemap Colliders
06:43 - Further Information