by timlillig
It depends on what aspects of the game you want to be similar to Heroscape.If you are looking for an easy to play miniatures game, I would recommend Song of Blades and Heroes. Like Heroscape, it uses a wide variety of figures and can be played on a hex grid. It focuses on fantasy rather than mixed genres, but it would not be too difficult to model sci fi figures. One major difference is that it does not come as a single package with rules, terrain, and figures. It is a set of rules only, with the intent that you will use any miniatures you want.