Your higher scores and your preferences (level, speed, sounds…) will be saved in a file named by default 'CTB.hs'. At launching the program will search for this file in the folder where the application is, if it cannot find the file, it will create a new one. You can rename this file as you want to, but if you want to use it, launch the program by double-clicking on the document. This replace the use of an 'Open…' command.