Files with zzl file extension can be found as part of ZZT video game for MS-DOS.
ZZL file extension - ZZT game data
What is zzl file? How to open zzl files?
File type specification:
The zzl file extension is related to very old ZZT video game for MS-DOS that became a popular template for MS-DOS game creation system.
The zzl file is one of the default file types used in ZZT, but its purpose is unknown to us.
This zzl file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.