Can you save?
As of right now, no; and likely as the game is now, there wont be the option to either- as the game would only take 3/4 of an hour at most to finish.
However; in the next update which should be out today/tomorrow (23rd / 24th) there will likely be the ability to pause the game
I was just going to post the tip that people can right-click on the game's title bar to serve as an unofficial "pause". It seems that tip won't be very necessary if an impending update will add in the feature. :D I look forward to it!
Sorry, this update wont have a pause feature- but we'll try to get it in for the next one! (promise)