Had to give it a 1 star. Not being able to save., had flash close after I'd spent a while on Original, only for to make me re-start from the very beginning. Sucks thinking that the only way to finish it is to actually leave it up the whole time and/or spend hours at one time.
The level with the ghost... mimic..(to not give spoilers).. it seems to be bugged. My units did not even attack him and ignored him, hitting the regular mobs,. and while he does attack them, he kept moving forward as well, so now they are no longer fighting each other.
For those who had lost their saved game, this is because of an update on Chrome., we need to transfer the files over. We have to transfer our files over to the new version.(I am trying to re-find the post that said how to do it myself.)