A crack or modification that allows the game to run without needing the original physical disc in a drive.

Before applying a "No-DVD" or large "HF Patch," back up your original game installation and save files.

A major community-driven collection of mods, translations, and fixes curated by members of the Hongfire community. "Patch40" indicates it is version 4.0 of this compilation.

Since the original developer (Illusion) has ceased operations, these community patches are the primary way users keep the game compatible with modern Windows versions. However, because these files are distributed via third-party community forums and file-sharing sites, you should:

Always run an antivirus scan on .exe or .dll files included in such patches, as they are often flagged or can be repackaged with malicious software by untrusted uploaders.

Likely refers to Microsoft AppLocale or a similar utility (like Locale Emulator) used to run the game in a Japanese locale environment. This is necessary to prevent text from appearing as gibberish and to ensure the game's internal file paths function correctly on non-Japanese Windows systems. Usage and Safety

Ensure you are downloading from a reputable community archive or the official GitHub repositories for the modders involved.