Drakengard and NieR

Drakengard
ドラッグ オン ドラグーン (Doraggu On Doragūn?)
Developers	Cavia, Access Games, PlatinumGames, Macrospace
Publishers	Square Enix
Genre(s)	Sci-fi, ARPG
Media	Video games
First release	Drakengard September 11, 2003
Latest release	NieR:Automata WW February 23, 2017

Drakengard, known as Drag-On Dragoon in Japan, is a sci-fi Japanese action role-playing game franchise published by Square Enix. The latest release NieR:Automata has collaboration events with Final Fantasy Brave Exvius, Final Fantasy XV, and Final Fantasy XIV: Shadowbringers.

Connections to the Final Fantasy series

As host

NieR:Automata

• Noctis Lucis Caelum's sword, the Engine Blade appears as a secret weapon.

As guest

Final Fantasy XIV

• The series of 24-player raids YoRHa:Dark Apocalypse is directly based on NieR:Automata.
• Soundtracks from Nier:Automata:
  • "Alien Manifestation"
  • "City Ruins (Rays of Light)"
  • "Significance"
  • "Song of the Ancients - Atonement"
  • "The Sound of the End" (actually is "Bipolar Nightmare" from NieR:Automata)
  • "Weight of the World (Prelude Version)"

Final Fantasy XV

• Two soundtracks from NieR and NieR:Automata are available to play on the Regalia's music player.
  • "Song of the Ancients - Fate"
  • "Weight of the World"

Final Fantasy Brave Exvius

• Characters from NieR:Automata appear as units:
  • 2B
  • 9S
  • A2
  • 21O
  • Adam
  • Eve

Theatrhythm Final Fantasy Curtain Call

• Soundtracks from NieR available as DLCs:
  • "Hills of Radiant Winds"
  • "Shadowlord"
  • "Song of the Ancients / Devola"
  • "Kainé / Salvation"

Theatrhythm Final Fantasy All-Star Carnival

• Soundtracks from NieR and NieR:Automata available:
  • "Song of the Ancients (Fate)"
  • "Amusement Park"
  • "A Beautiful Song"
  • "Emil's Shop"