When you click on Save to disk, don't you see a message about the save being done? In chrome it's probably at the bottom, in firefox up to the right. You should be able to open the location of the save there. Or click on the three dots/lines in the top right corner and select downloads. You should see the save there. Likely, it's in C:/Users/yourusername/Downloads if you are on Windows.I've downloaded it and play it with a browser. There is a save option, but that doesn't show me where the files are stored. I've looked in the folder the game is in, but can't see it there.