I didn't have any problem playing the demo. Not sure if I'm going to buy it. Was checking the reviews to see what other people thought. I honestly thought it was a bit boring and hoped it got better in the purchased version.
Because of the other review I played the free hour first before I purchased it. The story line and game is on the simplistic side. It is easy to get the maximum on all levels. I did and played it through in a couple of hours. Try the free hour first to see if the game is for you. I wouldn't pay full price for it, but 2 for 1 it was okay.
The game itself is good, but it still has bugs. Sometimes the automatically generated items in the later levels don't generate anything. Had to restart any number of levels because items didn't generate. Also be aware that in particular Mrs. Dracula can't have more than two items checked, so pay attention when you are clicking items for her to do. Make sure the check mark is there. Frustrating thinking that you clicked the item and move on only to discover the click didn't take and you have to restart if you are playing the timed version. Finished all levels on gold yet still didn't get all the trophies. It doesn't show you what the missing trophy is so I have no idea what to do to get the last trophy. I really hate that the forums no longer exist. A google search doesn't give me anywhere to find the information I want. That said, it is still a decent game, but it could be better to meet players needs.