I DL'ed the demo.
I hate these type of games...it's called "find the hidden spot on the screen to click on"!
Don't forget the logic problems...
Q: You are stuck in a room with no way out. There are 22 seemingly useless items in your inventory. In the room there are 6 objects that can be interacted with, none of which have an obvious purpose. Some items in your inventory may be combined to form a new item, though you have no way of knowing which without trying. Write down the maximum number of combinations of mouse clicks on items and scene objects you will need escape from the room.