Eador: Masters of the Broken World is a turn-based strategy in a fantasy setting. The game combines a lot of different elements from a whole bunch of games genres. There are tactical battles on a hexagonal battlefields and heroes traveling around the map, but also complex economical and political system and ”a grand strategy’ approach to the game campaign.
Is it some kind of HoMM or Master of Magic successor?
Yes, it is. Only that it’s a little bit better 
http://www.snowbirdgames.com/eador/faq/?lang=en
