For the tileset, see Grineer Asteroid Fortress.

The Kuva Fortress is a location in the Star Chart introduced in Update 19. As the seat of the Grineer's power and home to their Queens, the Kuva Fortress is an imposing asteroid base filled with formidable weapons and sophisticated defensive systems designed to keep even the toughest of enemies out.

Permanent access to Kuva Fortress is possible after completion of The War Within quest.



Unique EnemiesEdit

  • Archwing enemies will attack in open-air tiles. There are, however, no dedicated Archwing missions on the planet, and, despite the archwing being required for every mission, tiles with archwing-elements are rare.

Kuva SurvivalEdit

On the mission node "Taveuni", which is a Survival mission, unlike normal survival missions the Lotus will inform players that the Grineer are harvesting Kuva on the mission which players are optionally tasked to intercept. When a life support capsule is deployed, an Eximus unit will spawn with a "Kuva Catalyst" item which resembles a red Power Cell used for Excavation missions which drops when the unit is killed. This Catalyst will turn any life support capsule into a Kuva Harvester tower when brought near, and a 1 minute timer will countdown as well as giving the tower 4,000 health. Players must defend the tower while also keeping life support above 1% until the timer is over, in which the player will receive 200 Kuva.

  • Kuva Towers will only reward 10% to the Life Support when complete, instead of the usual 30%. This means players must be either tactical and only turn some capsules into harvesters, or have Warframes that can quickly kill or farm enemies for life support drops.
  • The Eximus unit carrying the Kuva Catalyst can have it's corpse looted again with Pilfering Swarm (if caught in the first place before dying) or Desecrate, allowing another Catalyst to drop which can be used to quickly convert another tower when it spawns.
  • The 200 Kuva per tower is affected by the Resource Booster, which doubles this amount to 400.
  • If the Life Support on the level depletes to 0% before the Kuva Harvesting is complete, the tower will vanish along with the Kuva players would have received.



System detour of Kuva Fortress.

  • Unlike other planets in the Star Chart, the Kuva Fortress actually moves around the Star Chart, appearing in different places in relation to other planets.
  • Planets located around the Kuva Fortress as it rotates will contain Kuva Siphon missions.


The Kuva Fortress is one of the most compact and maze-like missions in the game, second only to Infested Ships. With winding corridors leading to spiderweb like paths into branching rooms or open areas, it's easy for new players to get lost in this tileset.

Besides its size and complexity, it is also unique in the sense that it is heavily fortified with traps and turrets, that will activate if alarms are triggered by invincible sensors. In addition to turrets becoming active and the alarms automatically being triggered (alerting enemies as well, unlike Corpus Security Cameras) traps such as explosives mines will arm themselves, which often are in the path of fleeing Tenno attempting to find cover.

Mirage's Sleight of Hand ability is useful for taking control of many of these traps and fortifications, turning them off or even actively reprogramming them against the Grineer, similar to Nyx's Mind Control or Chaos.

The Worm Queen is often seen and heard on scattered monitors throughout the facility, giving updates, orders, or sadistic threats to Grineer on board. Despite this, her transmissions never address the player even if alarms have been triggered.



  • The mission nodes are all named after the Fiji islands.
  • If undetected, a special room with a big monitor will spawn many Grineer who stand idle in formation and face the screen, as information is barked from the monitor. This is the only known case of enemies being specifically placed like this.


  • On Pago in the vault with the identical rooms, if you get caught underneath the folding ramp of the console you will be TRAPPED and using the /unstuck command WILL NOT free you as the game doesn't register you as somewhere inescapable.
    • The only tested way to escape the folding ramp is to switch between operator mode and your warframe. When you enter operator mode it places your operator in front of your warframe and then switching back to your warframe will cause you to summon the warframe where your operator moving yourself forward.


Patch HistoryEdit

Update 22.17

New Gamemode: Endless Kuva Survival!
Endless Kuva Survival brings an Excavation/Defense twist while maintaining the intensity of Survival. This gamemode offers players a much requested avenue to acquire Kuva outside of the Siphon/Flood mechanic and on the aptly named Kuva Fortress! Players, both Public and Solo, now balance risk and reward as they sacrifice their Life Support Towers for precious Kuva.

The current Kuva awarded per successful Kuva Harvester is set at 200. A plethora of test runs and acquired stats showed that 200 Kuva sat safely in between Kuva Siphon and Kuva Flood missions. This value is not set in stone - we are eager to read your feedback from your own playthroughs!

Update 19.6

  • In an effort to address the issue of people not noticing the movement of The Kuva Fortress, we have made the loop completion time odd rather than a 24 hour cycle. Players who were logging in around the same daily time found that the Kuva Fortress would always be roughly in the same position, and was restricting the variety of Kuva Siphon missions available.
  • Fix: Fixed the Kuva Fortress position not setting up correctly every other day.

See AlsoEdit