Not to rain on anyone's parade, but it takes a few games to figure this game out, and then once you do, you've already won. Boring.
Star Drive 2 has the same problem, it takes a few games to figure it out, and then once you do, it's too easy.
I am still playing Star Trek: Birth of the Federation (st:botf) or just (botf). It came out way WAY back in 1999, and even in the vanilla (non-mod) version, the replayability reaches into the THOUSANDS. THOUSANDS. There are mods too, but just in vanilla, you can replay THOUSANDS of times. The game is now FREE to download, has been for many years, not to mention all the mods. Google it, and play a better game, that's free. Can I say that here?
I played GalCiv3 about a dozen times, yawn, hundreds of turns of upgrading, then some boring turns of non-interactive combat. This is one of those games you play, while your attention is focused on watching a movie, or something else. Too boring to play sober.
A toast to GalCiv3! <cling><cling><gulp><gulp><click><click> <repeat>