.ILL File

The ill file extension is mainly related to Illust Logic Puzzle and used for its default data format.

These are ASCII files that contain puzzle data. Illust Logic Puzzle is Japanese program.

This ill 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.

How to open:

You can view these files using any text editor.

How to convert:

Probably cannot be converted to other formats.