How sad. :(
The game play is pretty much the same as the PC versions but the graphics are just bad. You have the choice of five different castles (if I remember well) and they are pretty much the same castles as in Heroes II. The creatures are the same except for a couple. I think the creators wanted this game to be as good as the PC versions but they did not make it.
If you really are a fan of the Heores seires then I suggest you try it before buying it. That way it will give you an idea if it is good or not.