Although I hope Shadow Basher is right, www.thedawnoftyranny.com is still available. Lucas normally buys up all the urls very quickly as soon as the title is decided
Only one out of those three that I'd like is Dawn of An Empire, you don't see much tyranny in IV-VI, just the planets blowing up and the rebels resisting. There isn't much on any of the planets showing how the tyranny is affecting them, so IMO the whole tyranny bit is a bit not-believable. Not sure if I worded that in the right way, I might reword myself if its misinterpreted.