File Extension ZDS File Format GZDoom save file ZDS stands for GZDoom save file. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question Saving Excel spreadsheet to multiple locations Definition and description of a .msg file? How are the graphics and images stored when you save a worksheet as a web page in Excel?