Turn based strategy system

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I’ve made a new preview video of the blueprint running on a hex map, with a combination of visible and invisible tiles. I’m not much of a modeler yet, so I’ve made it it a clean, simple low poly look. Somethin along these lines will be used as an example level for the marketplace release.

https://.com/watch?v=SicrglnZzEY
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Hello ,
I’m interested in you project from visual side.
How you draw hexes on this green plane in your preview video? Just instanced static meshes? Is this mesh imported from some FBX file with zero thickness hex model or this is some sort of another approach? And your cursor is just a UV map with different channels?