Swamp Biome Hexagon Tiles with layered PSD files included. You can make any changes necessary for your project and create new variants very easily.
This pack contains 9 Swamp Hex Tiles in 47x54 pixel format, which I found to work well with the Unity Tilemap System.
For these Tiles to align correctly, the grid size should be x=0.47 y=0.54, like the image dimensions.