I suggest that you wait till the final version. Only the beta is available as of this time. It is 7 am in Vancouver, and their stardock office would open in an hour. Hopefully by then they would upload the final retail version. 

In my case, it takes about roughly one and a half hours for Entrenchment to be downloaded, and it automatically updates the original game. You could play other PC games as stardock downloads the game into your PC. The downloading does not in any way interfere with playing other games insofar as my rig is concerned.