Interested in this set and a couple others from you. What sort of license do these tiles come with and may I have it in writing?
Viewing post in Fantasy RPG Tileset Pack comments
The license is very open. Edits are welcome, no engine restrictions, and OK for commercial use. In short: you can do pretty much anything other than redistribute the assets directly.
You can find the full legal text here: https://www.gamedevmarket.net/terms-conditions/#pro-licence