This game is tediously boring.
Par for the course of these kinds of games is that you begin with a very small area and number of units, etc. and must find your way to expansion. This is always relatively boring at first, but goes quickly since there is little to do and you can click through turns quickly.
The make or break point for this category of game is how tedious it becomes once significant expansion occurs. Do you have to click on everything in the map to see if anything needs your attention every turn or does the game notify you whenever something important happens? In this area, the game is mediocre. There are notifications when significant events happen, but I still feel the need to check up on every planet periodically to know how things are going.
A huge factor for every game's enjoyability is what aspects come into focus. Every game has good and bad parts. The question is, do the good parts shine and the bad parts fade into the background or do the bad parts constantly nag you until you can't enjoy the good parts anymore? Here the game is mediocre to bad. What you consider good or bad will depend on your gaming preferences and I don't care to take the time to elaborate, but suffice to say I was not impressed with the balance (despite some quite good features).
Another big factor is the interface which is mediocre to bad depending on your adaptability and preferences. It is never good when you spend as much time finding and clicking buttons as you do making real game changing decisions.
A significant factor that made me set this game aside was that the explanations of core game concepts was weak. I read the manual before I played and also went through the tutorials. Yet, as I played, I didn't really feel like I knew what was going on in many important aspects. Some people enjoy figuring out the mystery as they go along. I do for subtle aspects and tricks. I most certainly don't for the basic core concepts (especially when having taken the time to read the manual...).
There are also a handful of other minor points against enjoying this game but I won't bother to elaborate since this is already a long enough review. The important point is that with the huge number of games available for cheap today, this one just isn't worth the (extensive, tedious) time to play.
As I side note, I do not understand at all the number of positive reviews (almost all of which are little more than "YEAH!! AWESOME!! COOL!!! BEST GAME EVAH!!!!!"). I suppose it takes a certain kind of player to enjoy this title. Make sure you are one of them before you buy it.