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Phobos has always been a highly contested area. Skirmishes between the tireless Grineer and Corpus factions occur in orbit and on the Martian moon surface. Unanswered questions about this natural satellite still remain as all research is endlessly delayed by war.
—Phobos Fragment

Phobos is a moon of Mars where the IconCorpusOn.png Corpus are the controlling faction.

Phobos becomes accessible by defeating the Specter in the Phobos Junction on Mars after completing the required tasks.

The Assassination Target for Phobos is The Sergeant, located in the mission Iliad. The Sergeant drops the component blueprints for the MagIcon272.png Mag Warframe .

Phobos does not have a Tenno Relay.


Invasion Missions: The Grineer will appear as a "Sideable or Opposing" faction while the Infested will always appear as an "Opposing" faction during Invasion missions.

Spy Missions: Special enemy variants have a chance of spawning during Spy missions.

Survival Missions: The following lists below do not apply to Survival missions.

IconCorpusOn.png Corpus IconGrineerOn.png Grineer Infestation w.svg Infested


Target Name Type Level Tile Set Mastery EXP Internal Name
IconCorpusB.svg Roche Exterminate 10 - 12 Corpus Ship 157 SettlementNode1
IconCorpusB.svg Stickney Survival 10 - 15 Corpus Ship 157 SettlementNode3
IconCorpusB.svg Gulliver Defense 10 - 15 Corpus Ship 157 SettlementNode11
IconCorpusB.svg Shklovsky Spy 11 - 13 Corpus Ship 157 SettlementNode14
IconCorpusB.svg Sharpless Mobile Defense 11 - 13 Corpus Ship 157 SettlementNode15
IconCorpusB.svg Skyresh Capture 12 - 14 Corpus Ship 157 SettlementNode2
IconCorpusB.svg Kepler Rush (Archwing) 12 - 14 Corpus Ship (Archwing) 157 SettlementNode10
IconCorpusB.svg Monolith Rescue 13 - 15 Corpus Ship 157 SettlementNode12
NefAnyo sigil b.png Iliad Assassination 13 - 15 Corpus Ship 100 SettlementNode20
IconInfestedB.svg Memphis Defection (Dark Sector) 15 - 25 Grineer Asteroid 157 ClanNode10
IconInfestedB.svg Zeugma Survival (Dark Sector) 15 - 25 Grineer Asteroid 157 ClanNode11


  • None of Phobos's default missions use a surface tileset, possibly because Phobos itself is a small rock only a few miles across.
  • Phobos is the first planet to unlock that has Plastids.png Plastids in enemy drop tables, though Plastids can be obtained prior to unlocking Phobos if the player has done the A Man of Few Words quest beforehand, which gives the player access to Uranus during the quest. Tier 2 Cetus bounties on Earth and Tier 1 Fortuna bounties on Venus have Plastids on their drop tables as well (however since the rewards rotate ever 2½ hours, the Plastid bounty reward is not always available).



  • Phobos is named after the Greek personification of fear and one of the sons of Ares, who is Mars's Greek equivalent. It has a twin moon called Deimos (terror), which was added in the Heart of Deimos update.
    • From Update 9.5 (2013-08-09) to Update: Specters of the Rail 0.0 (2016-07-08), Phobos was depicted as a round planetoid in-game, as opposed to being irregularly-shaped in real life. It is widely believed to be a captured asteroid and is speculated to either collide with Mars or disintegrate within the next 50 million years.
    • The nodes on Phobos are named after actual geological features of Phobos. Other than Monolith and Iliad, those in turn are named either after astronomers (e.g. Asaph Hall, who discovered Phobos) or after characters in Gulliver's Travels (as its author, Jonathan Swift, predicted the existence of Mars's moons).
    • The boss level, Iliad, is named after an ancient Greek epic poem, which tells of the battles and events during the Trojan War and of the quarrel between King Agamemnon and the Warrior Achilles, where Ares (father of Phobos) is a significant character.
  • Before Update 19.0 (2016-11-11), Phobos' main environment was the Grineer Settlement Tileset.
    • Even after the change, the Lotus still refers to the final stage of The Law of Retribution, which used the Grineer Settlement Tileset, as Phobos, reflecting its previous environment.
  • This planet was unlocked as a reward for the community completing the Operation: Arid Fear. Much of the event involved the Grineer and the Corpus trying to hide the existence of Phobos from the Tenno.
  • Up until The Gradivus Dilemma, Phobos was the third planet in the game that was completely under the control of a given faction (besides the indigenous species), following the (then) Infested-controlled planets of Eris and Jupiter.
  • Phobos was the first planet to have an Assassination mission involving more than one entity, the second being the first phase of Lephantis.
  • Phobos is the only planet in which Research components do not drop.


Patch History[]

Update 29.5 (2020-11-19)

  • Various fixes to lighting issues in Phobos skyboxes.

Update: Specters of the Rail 0.0 (2016-07-08)

  • Phobos Tileset is now on Mars, and all Phobos missions are now on Asteroid Tileset.

Update 10.5 (2013-10-23)

  • Swapped Skyresh & Stickney mission types to moves survival off the main path in Phobos.

Update 9.5 (2013-08-09)