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Events are large scale alerts that usually last longer than 24 hours. Participating in these events will reward the player with rare or brand new equipment, blueprints or Mods.


Fusion Moa Event
May 3 to May 6, 2013
The rewards for Tenno who participated in the event, by killing at least one Fusion MOA, were a Frost PrimeIcon272.png Frost Prime blueprint and Credits64.png 100,000.
Artifact Defense Event
June 21 to June 24, 2013
The possible rewards from this event's mission were Mod TT 20px.png Corrosive Projection, Mod TT 20px.png Shield Disruption, and Mod TT 20px.png Infested Impedance. The missions were defense missions, which could've been against any of the three factions and had a variable number of waves that needed to be survived in order to complete the mission.
Informant Event
July 5 to July 7, 2013
Very similar to the Fusion MOA Event in which a global operation is held requesting all Tenno to attack a brand new enemy. The event rewarded all participating players with the Snipetron.png Snipetron Blueprint, a weapon which was removed in the past due to it not following Corpus lore, along with the SnipetronVandal.png Snipetron Vandal so long as the player had at least 20 Informer kills.
Sling-Stone Event
July 26 to July 28, 2013
Required Tenno to attack the Infested to obtain Corruptors. These Corruptors were then used to taint the fuel cells of large Fomorian ships of the Grineer as a Mobile Defense type mission. Tenno had to attack and destroy one Fomorian ship for each planet and success rewarded them with new Ammo Mutation mods, 2-5 dependent on how many points were obtained by the player. alongside this all contributing Tenno also received a holographic badge.
Operation: Arid Fear
August 9 to August 15, 2013
The first event to last more than 72 hours. Tenno were to take part in special replayable alerts which rewarded them with Corpus Datamass and Corpus Cipher which were used as components to create Corpus Void Key. These void keys would take players to a special Corpus void mission where they would capture special Scout enemies from 3 ships, each gaining new abilities with each ship to make them harder to capture. Succession of the event rewarded Tenno with access to the Grineer Settlement tileset along with 3 dual-stat mods (Mod TT 20px.png Shred, Mod TT 20px.png Vigor, Mod TT 20px.png Lethal Torrent) dependent on how many points were obtained per player (1, 50, 100 points respectively) and also a second holographic badge to commemorate the participation in this event.
Survival Weekend Event
August 30 to September 3, 2013
A special test run to let players test out the new Survival game mode that would replace Raid missions. Awarded the Survival Emblem badge and the StrunWraith.png Strun Wraith.
The Gradivus Dilemma
October 24 to October 30, 2013
An event focused on special Exterminate missions in locations on Mars that the Grineer and Corpus were competing for control of. Tenno chose to assist a faction of their choice in defeating the other, with special rewards offered by the victorious faction for helping them achieve victory.
The Hunt For Alad V
November 20, 2013
An event that was introduced in Update 11.0 (2013-11-20). It lasted until the infestation had been cleared. The mission's type was extermination against infested, and the hunt was to make Alad V reveal his position on Jupiter.
The Cicero Crisis
December 19, 2013 to January 6, 2014
An event that was held from December 19, 2013 to January 6, 2014. The Grineer set out to poison the great overgrown forests of Earth. Players were tasked with scanning Earth's flora for ingredients and then creating and injecting antitoxins into the poison-spreading machines. Introduced the Earth jungle tileset.
Operation: Oxium Espionage
January 29 to February 5, 2014
An event released with Update 11.9 (2014-01-29). Tenno had to hunt for a new Corpus unit, known as an Oxium Osprey, for a new Orokin alloy, Oxium.
Tethra's Doom
March 5 to March 12, 2014
An event released with Update 12.4 (2014-03-05). The Tenno must stop Councilor Vay Hek and the reforming Fomorian Fleet from dominating the system.
Specters Of Liberty
May 2 to May 8, 2014
An event released with Update 13.2 (2014-05-01). The Tenno must rescue members of the Red Veil resistance movement that have been captured by the Grineer and the Corpus. This event was the debut of Rescue 2.0.
Operation: Breeding Grounds
June 19 to June 26, 2014 (PC)
August 22 to August 30, 2014 (PS4)
An event released with Update 13.8 (2014-06-19). It requires players to sabotage the Infested Ship by destroying 3 Infested Hives per ship, with each destroyed hive having various consequences for its destruction, such as increased Infested retaliation. This event was the debut of the Hive Sabotage game mode.
Avalanche Offensive
August 14 to August 17, 2014
Players had to kill 100 Arctic Eximii to be rewarded a 3-Day Affinity Booster.
Operation: Cryotic Front
August 27 to September 3, 2014
This event was the introduction of the Excavation mission type replacing Survival missions on planets. What players had to do was gain 500 points on Earth to obtain access to Phobos and a badge, then gain 1000 points on Phobos to get the Cryotic Mod Pack and obtain access to Europa, where a new Tile Set was introduced. 3000 points earned players the LatronWraith.png Latron Wraith and the Polar Glaxion Skin.
Operation: Gate Crash
September 17 to September 24, 2014
An event released with Update 14.7 (2014-09-17). The introduction of the Orokin Sabotage game mode. Awarded the Sheev.png Sheev dagger and the +120% Slash Damage event mods.
Operation: Mutalist Incursions
November 28 to December 3, 2014 (PC)
December 17 to December 26, 2014 (PS4/XB1)
Players were given four bounties to take care of. Upon completion of the bounties, players unlocked a special survival mission on Eris. Several new infested units were Introduced.
Operation: Eyes of Blight
December 19, 2014 to January 5, 2015 (PC)
February 24 to March 6, 2015 (PS4/XB1)
Released with Update 15.8 (2014-12-19), this event had Councilor Vay Hek attempt to destroy the newly constructed Tenno Relays, using his fleet of Balor Fomorian ships. In order to stop him, you had to collect Omega Isotopes to build a Fomorian Disruptor that would allow you to take your Archwing into the core of a Balor Fomorian, and destroy it from the inside out. Each core destroyed earned you a point towards a new reward, which included: An Eyes of Blight emblem, an Archwing Mod pack, and the grand prize, the ImperatorVandal.png Imperator Vandal. While you may have completed a mission, if a certain number of people did not, Councilor Vay Hek would end up destroying a Relay, and moving on to the next.
Operation: False Profit
April 23 to April 29, 2015 (PC)
June 4 to June 11, 2015 (PS4/XB1)
Awarded the QuantaVandal.png Quanta Vandal and the +120% Impact Damage event mods. Introduced the Bursa MOAs.
Operation: Tubemen of Regor
May 12 to May 20, 2015 (PC)
June 17 to June 25, 2015 (PS4/XB1)
Awarded the KarakWraith.png Karak Wraith. Introduced the Grineer Sealab tileset.
Operation: Shadow Debt
January 25 to February 3, 2016 (PC)
April 14 to April 22, 2016 (PS4/XB1)
Awarded the VulkarWraith.png Vulkar Wraith and Scorn Lacera Skin. Introduced the Acolytes as well as the corresponding Acolyte mods.
Operation: Rathuum
April 29 to May 9, 2016 (PC)
June 10 to June 20, 2016 (PS4/XB1)
Awarded the FuraxWraith.png Furax Wraith. Introduced the first arena mission, Rathuum.
Operation: The Pacifism Defect
March 2 to March 9, 2017 (PC)
March 20 to March 27, 2017 (PS4/XB1)
Awarded the IgnisWraith.png Ignis Wraith (blueprint / built / clan research depending on clan score). Introduced the Defection game mode.
Operation: Ambulas Reborn
May 4 to May 11, 2017 (PC)
May 15 to May 24, 2017 (PS4/XB1)
Awarded the SupraVandal.png Supra Vandal. Introduced the new version of the Ambulas Boss Fight.
Operation: Plague Star
November 15 to November 27, 2017 (PC)
December 1 to December 18, 2017 (PS4/XB1)
The first event since Update 22.0 (2017-10-12), featuring bounty missions on the plains. Possible rewards include EtherDaggers.png Ether Daggers, Snipetron.png Snipetron, Mod TT 20px.png Fulmination, Mod TT 20px.png Sacrifice, infested Zaw parts, and infested Zaw Exodias.
The Pyrus Project
August 30 to September 13, 2018 (PC)
October 4 to October 18, 2018 (PS4/XB1)
Awarded the Zylok.png Zylok. Introduced the rebuilt Strata Relay.
Operation: Buried Debts
March 8 to March 25, 2019 (PC)
March 19 to April 3, 2019 (PS4/XB1/Switch)
Awarded the OpticorVandal.png Opticor Vandal. Introduced the Exploiter Orb Boss Fight in Update 24.5 (2019-03-14).
Operation: Hostile Mergers
May 22 to June 3, 2019 (PC)
June 11 to June 24, 2019 (PS4/XB1/Switch)
Awarded the SpectraVandal.png Spectra Vandal and GlaxionVandal.png Glaxion Vandal. Introduced the Disruption game mode.
Operation: Scarlet Spear
March 24 to April 28, 2020 (PC)
April 9 to May 14, 2020 (PS4/XB1/Switch)
Possible rewards include the Basmu.png Basmu, CetiLacera.png Ceti Lacera, Arcanes, and Stance Forma. Introduced the OpLink.
Nights of Naberus
October 15 to November 10, 2020 (all platforms)
Possible rewards include Naberus Ephemera, Spinneret Ephemera, ExodiaContagion.png Exodia Contagion, ExodiaEpidemic.png Exodia Epidemic, and Infested Zaw parts.
Operation: Orphix Venom
December 18, 2020 to January 18, 2021(PC)
January 21 to February 21, 2021 (PSN/XBX/Switch)
Possible rewards include LavosIcon272.png Lavos, Cedo.png Cedo, Arcanes, and Stance Forma. Introduced Necramechs in normal mission gameplay.
Star Days
February 11 to February 25, 2021 (all platforms)
Possible rewards include Eros Wings Ephemera, Snipetron.png Snipetron, and IgnisWraith.png Ignis Wraith.

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