From Hard Drop Tetris Wiki
Pages in this category have missing or broken files, and should be replaced, removed, or corrected.
|Even if it appears unused, this category should not be deleted.
This may be because it is URL-linked only, not always in active use, or is in use in some other way.
Pages in category "Pages with broken file links"
The following 13 pages are in this category, out of 13 total.