Override

Override was a six player match-made activity released alongside Season of the Splicer. It follows Mithrax, Kell of Light, Lakshmi-2 The Guardian, Zavala, Osiris, Ikora Rey, and Saint-14 as they breach the Vex network with a Fallen technique known as "Splicing" in order to bring an end to the Endless Night.

Lore
After the Clash of the Chosen, the Last City was engulfed by the Endless Night, a Vex simulation created by Quria, Blade Transform as part of Savathûn, the Witch Queen's movements throughout the solar system. The Vanguard sought the help of Misraaks, who offered it in exchange for the House of Light's sheltering within the Last City. Agreeing to these terms, the House of Light is allowed to live in the abandoned Botza District while Misraaks teaches The Guardian the ancient Eliksni technique known as "Splicing" which allows the user to commune with machines. Using this new ability, the Vanguard hopes that it will bring an end to the Endless Night.

Gameplay
Override takes place in four locations around the solar system. All of them follow the same formula with the variation being found in enemy and boss types.

Overloading the Terminal
Override begins with the players walking up to a neon spiral of Vex constructs with enemies surrounding it. Killing enemies drops motes on the ground which need to get picked up and then deposited into the central terminal. Depositing the maximum of ten motes will spawn a crate of heavy ammo. Occasionally, a Champion will spawn in and will attempt to make its way to the terminal. If the Champion gets to the terminal, it will block the ability to dunk motes until it is defeated. During the dunking phase a portal will open up, allowing players into the Vex network. There will be a Vex Champion within named Scytale that, when killed, will drop a Data Spike. Players can pick up this Data Spike and deposit it into the terminal for a large amount of progress. This will happen once per phase.

Once the progress bar was been filled by a third, the terminal will lock out and a large wave of enemies will spawn with two larger enemies named Intrusion Detectors. All enemies must be killed to continue. Once the connection blockers are cleared, the Vex nodes will spawn around the terminal, one of which will flash red. Players will need to destroy three nodes to continue. The terminal will spawn platforms for the players to climb up in order to interact with section of it. This will unlock the terminal.

These events repeat twice more for each third of progress. Each repeat will have the players climb higher up the terminal in order to move on.

Bypass Network Security
After the progress bar has been fully filled and the terminal unlocked, the terminal will disappear and open a gateway into the Vex network. Players will fall into the network and have to make their way through an obstacle course and enter a portal at the end of it. There, they will find the boss in a large, circular arena.

Europa
Unique Enemies:
 * Cabal
 * Barrier Colossus
 * The Intrusion Detectors will be large Colossi

Boss

On Europa, players will face the Wyvern Tacitas, Subjugated Mind. Once a third of its health is depleted, it will retreat behind a barrier on the central pillar. Players will have to kill a Scytale to unlock the cubes maintaining the barrier, and destroy them to continue the fight. This will repeat once more after the next third of health is depleted.

Moon
Unique Enemies
 * Hive
 * Vex Champions (Barrier Hobgoblin/Overload Minotaur)
 * The Intrusion Detectors will be large Ogres

Boss

On the Moon, the boss the players will face is a large Minotaur named Portunos, Subjugated Mind. Once one third of its health is depleted, it will teleport behind a barrier cage. It will then teleport the players into another part of the Vex Network. Players will have to fight their way through the network, dropping the barriers that block their past by destroying cube Vex structures. Players will then see a portal at the end of the section and going through transports them back to the boss arena, where its barrier has dropped. This will repeat once more after the next third of health is depleted.The Outer Nexus network.

Tangled Shore
Unique Enemies:
 * Scorn
 * Vex Champions (Barrier Hobgoblin/Overload Minotaur)
 * The Intrusion Detectors will be large Chieftains

Boss

On the Tangled Shore, players will face the Hydra Thesmotae, Subjugated Mind. The arena will be split into a single corridor by barriers on each side. Once a third of Themostae's health depleted, it will retreat behind one of the walls. Players will have to kill a Scytale to unlock the cubes maintaining the barrier, and destroy them to continue the fight. This will repeat once more after the next third of health is depleted, going behind the other wall.

The Last City
Unique Enemies:
 * Taken
 * Unstoppable Taken Phalanx
 * The Intrusion Detectors will be large Taken Knights

Boss

Portunos returns as the boss, fighting like it did on the Moon.