This mode was added in Project OutFox. It started as the "guitar" mode, before the "gh" mode existed. Around the time the "gh" mode came into being, this mode was renamed to "gdgf", which is the current name.
This mode is selectable in the game select screen.
First Seen:
"Guitar5"
(21 June 2020, The game is known as "Guitar" at this point)"Versus5"
(21 June 2020)"Guitar3"
(21 June 2020)"Versus3"
(21 June 2020)"Bass6"
(22 June 2020)"Versus6"
(22 June 2020)"Bass4"
(22 June 2020)"Versus4"
(22 June 2020)"guitar-six
(12 march 2021, the game is renamed to "GDGF" at this point)"guitar-versus-six
(12 march 2021)Replaced with:
"guitar-five"
(24 June 2020)"versus-five"
(24 June 2020)"guitar-three"
(24 June 2020)"versus-three"
(24 June 2020)"bass-six"
(24 June 2020)"versus-six"
(24 June 2020)"bass-four"
(24 June 2020)"versus-four"
(24 June 2020)Replaced with:
"five-fret"
(8 September 2021)"five-fret-versus"
(8 September 2021)"three-fret"
(8 September 2021)"three-fret-versus"
(8 September 2021)"six-fret
(8 September 2021)"six-fret-versus
(8 September 2021)Removed
"bass-six"
(8 September 2021)"versus-six"
(8 September 2021)"bass-four"
(8 September 2021)"versus-four"
(8 September 2021)