Heroes of Might and Magic, with more flaws
Just like others say, this game is exactly Heroes of Might and Magic, but with real-time on the main map. This means that you have a hero, he is moved around in real-time and there are monsters that lurk around a given anchor point until you come in range. Your hero gathers experience by defeating enemies through his troops battling in turn-based fashion.
The other difference as far as I am concerned with HoMM is that enemies tend to cast "fear" a great deal and... well the result is that you are forced to sit back and see your troops auto-play. This really takes the strategic fun out of your hands.
So as far as I am concerned, this is not a game for me. If you are really, really, *really* dying for an HoMM clone and have played every map anyone has ever edited, go ahead and buy this. Otherwise either acquire HoMM V or do something else with your precious money. ;)