Drakengard

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 and Final Fantasy XIV: Shadowbringers.

As host

 * Noctis Lucis Caelum's sword, the Engine Blade appears as a secret weapon in NieR:Automata.

Final Fantasy XIV

 * The series of 24-player raids YoRHa:Dark Apocalypse is directly based on NieR:Automata.

Final Fantasy Brave Exvius

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