This is a paid asset, but now you can download HexMap Tools Free.
Detail this asset from Unity Store: Original Link
HexMap Tools v1.1.1 (Latest version)
“If possible, please buy the package to support the developer”
HexMap Tools is a set of classes that help to create games, based on hexagons easier and faster.
The main features of HexMap Tools are:
– align/snap objects to customizable hex grid
– brush for hex prefabs
– customizable path finding(A* implementation)
– container for objects in grid
– conversion between world position and hex coordinates
– hidden math and many utility functions
The asset contains an example game based on Hexxagon