Download and Use Guide
First, please download ProSystem 13 using the download button below. When it is finished downloading, open the file. When this is done, please open the "ProSystem" application. (You can tell its the application because it has the Atari icon.) When the application is running, please click "File" then click "Open". It should prompt you to select a file. Please choose the game you downloaded from the Downloads Page. The game should work perfectly.