Hatsune Miku: Project DIVA Mega Mix+

Hatsune Miku: Project DIVA Mega Mix+ is a PC port of a Switch port of a PS4 port of an Arcade remaster of the previous Arcade title, running on the same engine as Virtua Fighter 5. It's the most complete release of DIVA yet, as it contains nearly every song in the series, as well as the option to choose from the graphical styles of Mega Mix or Future Tone.

This page has elements that may have appeared in the earlier ports, but they're listed here since Mega Mix+ is significantly easier to mod.

Unused Graphics#

In the game's main CPK file, almost the entirety of the original Arcade Future Tone, Future Tone DX, and Mega Mix is included, although the majority of AFT and a lot of FTDX files go unused. Mega Mix's unused leftovers are mostly related to Mix Mode and Switch specific graphics.

In Sekiranun Graffiti there's an unused texture left over from the original Project DIVA Arcade release of the PV, showing the logo of Arcade on the stage.

spr_nswgam_custom#

Gyroscope#

German

Italian/Spanish

The same unused Gyroscope setting from the Switch version was still translated for all the new languages here. French's is the same as English, so that one wasn't included.

Unused Survival Course Data#

within rom_ps4, you can find the txt file listing the survival courses and their songs, while survival_course.txt (Courses used in FTDX's JP release) and survival_course_en.txt (Courses used in Future Tone's western release) are used if the PS4 menus are re-enabled, a third listing named survival_course_event.txt is never used. It's mostly identical to the Japanese courses, but includes an extra 3 song Survival Course named SPECIAL COURSE, which includes Denparadigm, Negaposi*Continues, and The Intense Voice of Hatsune Miku. The graphic for the SPECIAL COURSE header is only contained in the Japanese menu graphics, and not in the English graphics. survival_course_event.txt was also present unused in FTDX, along with the unused SPECIAL COURSE.

Unused Code#

Arguments#

To do: The addresses to these bytes should be noted alongside the version number of the game where they were found.

In the original Mega Mix, adding a args.txt to the root folder would load the PS4 UI and Trial version. While the code to read the file no longer exists in the PC port, you can still enable the arguments through hex editing a byte.

Survival Course#

If the PS4 UI is re-enabled, either through args or external mods, Survival Course can be fully re-accessed, with the same song lists as Future Tone DX.

Unused Rom Folder Names#

The rom folders store all the files in the game, but it's mostly sorted by when each file was last edited from their previous game (i.e. pv_031_extreme_1.dsc is in rom_ps4_dlc, since it was last edited for Future Tone's DLC), sorted by when each file was added such as the game's regular DLC using rom_steam_dlc, and some files sorted by region which uses, for example, rom_steam_region. However, there's also some other rom folders coded in that never got used. Mostly language specific region ones.

• rom_ps4_fix - FT leftover. The game uses rom_ps4 instead. Despite this, rom_ps4_fix_en does get used.
• rom_steam_region_cn - Chinese (Simplified) regional folder
• rom_steam_region_en - English regional folder
• rom_steam_region_fr - French regional folder
• rom_steam_region_ge - German regional folder
• rom_steam_region_it - Italian regional folder
• rom_steam_region_kr - Korean regional folder.
• rom_steam_region_sp - Spanish regional folder
• rom_steam_region_tw - Chinese (Traditional) regional folder
• rom_steam_region_dlc_kr - DLC version of the Korean regional folder.

Most of the regional folders are unknown, besides the Korean one. It's possible localization was going to be region locked, like Future Tone and MegaMix prior, and stored in diva_main_region.cpk at one point. Localization ended up included in all releases inside the main diva_main.cpk under rom_steam with the respective region. The Korean (and possibly Chinese) folders would most likely also be used to manage the removal of Secret Police and Senbonzakura -F Edition-, and Senbonzakura for the DLC. A generic rom_steam_region/rom_steam_region_dlc in diva_main_region.cpk/diva_main_region_dlc.cpk is used instead for that purpose, containing those three songs in non-censored regions.

Unseen Animations#

This goes for nearly every song in the game, lipsync animation continues even when a character is off screen or hidden.

Ghost Rule#

During the intro to Ghost Role the camera goes through a hallway, as such a few seconds of animation are never seen. It's similar to what's used in Ghost Rule's Magical Mirai 2016 appearance, but it isn't identical. Watch on YouTube

Far Away#

During the intro section and sections of the song where full screen 2D images are displayed, there is additional hidden choreography. Watch on YouTube

Revisional Differences#

Version 1.01#

Released June 15th, 2022, it contained the following changes:

• Fixed a sound syncing issue that occurred in certain environments.
• Adjusted the visual presentation for some of the music videos.
• The game will no longer pause if the application window becomes inactive during Video Viewer or when playing back a custom playlist.
• Adjusted the UI elements in English, French, Italian, German, and Spanish.
• Other system stability improvements.

Another change, completely swept under the rug by SEGA, is that the game no longer will load files from any folder named "rom", which was a feature used to mod the game up to that point.

Version 1.02#

Released July 15th, 2022, it contained the following changes:

• Resolved missing audio issues that occur under specific situations
• Adjusted the visual presentation for some of the music videos
• Adjusted the UI for English/French/Italian/German/Spanish versions
• Other system stability improvements

The adjusted UI changed the fonts throughout all the menus to Rodin. This is paired alongside making song titles no longer squish, instead just scrolling if the name is too long. This update also added in NekoMimi Archive, which was only mentioned in a tweet for an update for Mega Mix on Switch, presumably due to the song not being present in the Korean version of the game.

Version 1.03#

Released January 30th, 2023, it contained the following changes:

• Fixes to issues that causes the game to hang in certain situations.
• A fix for an issue that occurred to Steam Deck players as well as resolving an issue where some buttons were incorrectly displayed.
• A fix for an issue that caused a discrepancy in total song count of songs passed in the high score rankings.

Version 1.04#

Released May 11th, 2023, it contained the following change:

• A fix for an issue that occurred for Steam Deck players.

The fix removed the UninstallHook files, which was causing the Steam Deck to hang when trying to uninstall the game.