Seems that most of the negative reviews of this game don't see the game for what it is, which is kind of an animated board game. You control troops and vehicles on the planet surface, building and preparing and working out a strategy for capturing enemy bases and building up reserves of both defenses and credits (which does strike me as funny; I thought basically the Empire just took what it wanted, eh?). The strategy is similar for the space battles, except instead of ground troops and their vehicles you're dealing with capital ships and fighters, and enemy stations and outposts. (Speaking of, if you like the space strategy but would like a bit more, I'd recommend Homeworld 2 (Mac))
So if you're looking for a FPS or flight-sim type action game, move along. This game isn't for you. But if you like board games -- especially something like the STAR WARS version of RISK -- this will be enjoyable fun for you (and your kids).