The game is fine, let's not make any bones about it. It follows in the Civ V tradition, in that you can only have one unit in one hexagon at at time, no more stacking of mega armies. The world is nice, the technology tree, once you get a handle on how it works, is also nice since the last patch that happened somewhere around November ‘15 and updated the tech web to something resembling the expansions – much improved. Diplomacy on the base game as released was a sad joke. AI players would come begging for strategic resources in return for 'favours’ that were not a useful currency for getting anything back from them, and they'd go from allied to war in the blink of an eye. Diplomacy has been completely re-designed in the expansion and I don't know how much of that re-design has filtered back in to the patches of the original release. Sadly, the base game has a dearth of content. There's only a handful of alien units. There are not a huge number of units you can achieve through research. Eventually (mid game) you will be totally overpowered when it comes to slaughtering aliens, which do not level up. And then you deal with the AI players, or you just research and build your way to one of the victory conditions, some of which are dependent on your choice of promoting ‘purity’, ‘harmony’, or ‘superiority’ in your culture. And that's it. Replayability, I decided, was not great — until the expansion came out. THAT was a game changer. The game is now much filled out, and definitely gained a lot of variety and replayability. I can only highly recommend the combination of the two.