Black Mesa's version of Surface Tension cut out a map from the original which was integral to the story's progression. Its replacement felt rushed and poorly implemented. This mod attempts to add that little something back into the game.
Sins of a Solar Empire is often described as a 4XRTS game, or a game that tried to merge the action and tactics packed gameplay of a real time strategy game with the deep, complex, empire wide strategy of a 4X turn based game.