Gadvia:Unused Difficulties

Gadvia has three difficulty levels accessible in game: Neritic (easy), Photic (normal) and Bathyal (hard). However, there are clues in the game that more difficulty levels were planned for the game.

Abyssal - the fourth difficulty level

In the game files, there is a mention of Abyssal right next to Photic and Bathyal, and it is speculated to be the fourth difficulty level.

Strings of global-metadata.dat:

...
FullComboClear*FullComboClear_Photic,FullComboClear_Bathyal,FullComboClear_Abyssal
...

Hadal - the fifth difficulty level

In a different place, there is also a mention of Hadal Charts, right next to Abyssal Charts.

Assets/Level/Localization/IAP/IAP_en.asset:

...
  - m_Id: 113061098327801859
    m_Localized: Abyssal Chart
    m_Metadata:
      m_Items:
        Array: []
  - m_Id: 113061098327801860
    m_Localized: Hadal Chart
    m_Metadata:
      m_Items:
        Array: []
...

Ribbon texture files

There are five "ribbon" texture files in the Assets/Texture2D/ directory, named ribbon-1.png through ribbon-5.png. Ribbon files are used by the game for the colored ribbon on the corner of a song art when entering a song. ribbon-1.png (blue), ribbon-2.png (yellow) and ribbon-3.png (red) are used for Neritic, Photic and Bathyal respectively. It is speculated that Abyssal and Hadal charts would've used ribbon-4.png (pink) and ribbon-5.png (purple).

Unused chart files

In Gadvia, chart files have filenames ending with D1, D2 and D3, for Neritic, Photic and Bathyal charts respectively. In the game's files, 60 charts with the suffix D1, 60 charts with the suffix D2, 60 charts with the suffix D3, and 2 charts with the suffix D4 have been found. It is speculated that chart files ending with the suffix D4 are Abyssal charts.

The two charts with the suffix D4 are:

• UMATrack13_Ch1_D4
  • The SongName field is set to "蘭嶼幣" and the Compose field is set to "野東西", which points to the song 蘭嶼幣.
• UMATrack22_Ch1_D4
  • The SongName field is set to "rainbow" and the Compose field is set to "ああああ", which points to the song rainbow.