Old compression format used on Unix systems; based on the Lempel-Ziv compression algorithm and reduces file size between 20 and 80 percent, depending on the file type; later replaced by .ARC compression.

Saved game file created with Zoo Tycoon, a zoo simulation game developed by Microsoft; stores game progress so the player can resume the game at a later time; should be stored in the "Saved Games" folder within the Zoo Tycoon directory.