Board game designers wanting to create beautiful regional-scale hex maps should check out this Kickstarter campaign: https://kck.st/2EcQVOx
Note: It ends today, in about 8 hours.
Ready-to-use mapping content ideal for games like Barbarian Prince or Kingmaker, with the possibility of commercial use. Personal Use Only is also an option (and cheaper), if you only need the assets for in-house prototypes.