The Index

The Index is a Corpus Arena-style mission type hosted by Nef Anyo on Neptune, in which Tenno and elite Corpus units fight to earn credits and other prizes.

Investment

Before entering the Index, the player initiating the mission must select an Investment amount in Credits that each squad member must pay in order to enter. There are three different investments:

Risk	Wager	Return	Profit (at one round)	Point Target
Low	30,000 Credits 30,000	105,000 Credits 105,000	75,000 Credits 75,000	50 Points
Medium	40,000 Credits 40,000	175,000 Credits 175,000	135,000 Credits 135,000	75 Points
High	50,000 Credits 50,000	250,000 Credits 250,000	200,000 Credits 200,000	100 Points

Each player in the squad will be asked to invest the same amount of credits, and in public matches, players will be matched with others participating in the same investment tier.

This Investment will determine the Point Target the team has, which is a designated amount of Index points that the team must cumulatively deposit and score in the match. If the team achieves the Point Target during the match, their invested Credits will be returned and they will additionally receive the listed profit. The credit rewards are not split between players - each player receives the full amount. However, if the team wins the match by having more points than Anyo Corp but does not achieve the Point Target, their investment is reimbursed without interest for the last round. Previous rounds that had successfully completed the Point Target will still reward the team with the listed profit. If the team loses the match each player will lose their investment completely.

The listed profit reward for winning is affected by a credit booster, although it does not appear on the mission complete reward screen. However, doubled credits from the Daily First Win Bonus, via the first mission completed after receiving a Daily Tribute, does not work on the Index.

Mechanics

The goal of the Index is to earn Index score for the team through the collection of Index Points, which are dropped by participants killed in battle. Represented as green, glowing diamonds, Index Points can be collected by walking over them, and then deposited to a designated bank location in order to earn the actual Index score. Every point deposited will add 10 more seconds to the timer, prolonging the match duration. When an enemy scores, the timer will go down by 10 seconds per point.

A player can hold multiple Index Points at once, and will gain bonus points for depositing large amounts at once, as seen in the table below. Bonus points will not affect the duration of the timer. However, holding large numbers of Index Points will apply the Financial Stress debuff which reduces the player's max health and shields, and constantly drain energy. All these effects are proportional to the number of Index Points held and are delivered through the Financial Stress debuff displayed by the player's HUD to the upper right.

Points Held	Bonus	Total	Efficiency
1	+0	1	+0%
5	+2	7	+40%
10	+4	14	+40%
15	+8	23	+53%
20	+10	30	+50%
25	+10	35	+40%

Bonus points cap at +10 when reaching 20 points, therefore it is not recommended to carry more than 20 points, as there is no benefit in holding more.  It is most efficient to cash in at 15 points, since only 2 additional bonus points are gained by holding 20 points.

The player's team will win if they score more Index Points than the opposing team before time runs out. If by the end of the match the players happen to tie, the tie goes to Nef Anyo.

If players meet the Point Target and are ahead of the opposing team, the game pauses and an extraction menu appears. Should players choose to continue, the Point Target resets and can be reached again to yield a bigger credit payout, otherwise they can leave with all their accumulated rewards. The wager is only subtracted at the start of the mission, and will not be subtracted again for choosing to continue. However, if players continue and lose the match, they will forfeit all rewards.

Specter Fill-Ins

The Index must be played with 4 players, however randomized Warframe Specters will assist the player and fill in unused spots on the team, such as a Mag or Frost, with a small assortment of weapons and even different color customizations. Their AI is similar to the advanced AI of the Investors, such as using abilities strategically and using parkour maneuvers. They will also try to protect the Specter or Player with the most points, following them loosely to try to give them some cover.

Warframe Specters will scale, however they can be more easily defeated than the player can in most cases, potentially giving Investors an easy way to obtain points.

Limitations

Energy and Health orbs are only available at preset dispenser locations throughout the arena, spawning periodically. Players are unable to use Companions and Sentinels during the match, and they are also unable to use Gear items.

The Brokers

Brokers are the elite Corpus units that participate in the Index to oppose the Tenno. These Brokers are divided into 4 different groups, with each group being selected at random as the opponents for a particular match.

• Trading Group
• Reclamation Unit
• Claims Investigation
• Investor Relations

Auditor

Azoth

Jad Teran

Raptor RX

Lockjaw & Sol

Nako Xol

Pelna Cade

Ved Xol

Derim Zahn

Jen Dro

M-W.A.M.

Tia Mayn

Armis Ulta

Dru Pesfor

Rana Del

002-ER

John Prodman

John Prodman is a legendary Corpus Prod Crewman that can be encountered in The Index after one hour has passed at any risk level. Known as Anyo Corp's "Employee of the Month", he drops an autographed poster when defeated, which can be placed in the Orbiter as a decoration once the mission is successfully completed.

Rewards

Aside from the bonus Credits earned from completing an Index match, at the end of match special Index Mods will be rewarded. Like the Executioner Mods introduced with Rathuum, these mods are special augments for certain weapons:

File:KineticRicochetRareReup.png Kinetic Ricochet	File:Medi-Pet KitMod.png Medi-Pet Kit	Pain Threshold	Shield Charger
Static Discharge	Thermagnetic Shells	Tether Grenades	Flux Overdrive

Operation rewards

• 5 completed matches: The Index Badge, Access to The Index: Stage 2
• 10 completed matches: Exilus Adapter, Access to The Index: Endurance
• 100 total score in Endurance: The Index Sigil

Operation rewards

5 completed matches	10 completed matches	100 total score in Endurance:
	File:UtilityModule.png
The Index Badge Access to The Index: Stage 2	Recompensa: Exilus Adapter Acceso al Ìndice: Resistencia.	The Index Sigil

Profit Considerations

Gameplay considerations aside, one way Index rounds can yield optimal profit is by scoring like so:

Risk	Points scored	Scores (without bonuses)	Profit per scored point	Scores (With bonuses)	Profit per scored point (With bonuses)
Low	50	15 + 15 + 15 + 5	1500 Credits 1500	23 + 23 + 4	2206 Credits 2206
Medium	75	15 + 15 + 15 + 15 + 15	1800 Credits 1800	23 + 23 + 23 + 6	2700 Credits 2700
High	100	15 + 15 + 15 + 15 + 15 + 15 + 10	2000 Credits 2000	23 + 23 + 23 + 23 + 8	3030 Credits 3030

It is worth noting that in random teams (with few or no Corrosive Projections or other armor-bypassing mechanics) killing speed is often much better in Low or Medium risk matches than in High risk ones. This is due to enemies being heavily armored on top of having shields.

Also, it is more profitable to stay in a match for a few rounds rather than leave and enter constantly, since wager is only paid once per match and profit is earned for each round. Staying longer reduces both the wager's effect on earnings and time wasted in transitions between matches.

All things considered, random and less-optimized teams can potentially gain significantly higher overall earnings-per-hour in Low or Medium risk matches rather than in High risk.

Maps

 

 Corpus

Gas Works 

 

 Corpus

Outpost 

Media

• A player carrying a large number of index points at once.

1/1

Warframe Guide - INDEX

Warframe The Index (Message And Narration)

THE INDEX PREVIEW - Hooray for Capitalism Warframe

The Index Preview & All You Need To Know (Warframe)

Patch History

Hotfix 25.4.1 (2019-07-24)

• Fixed scoring 30+ Index points at once resulting in a huge damage boost. Dying / Reviving would remove the damage boost.
• Fixed Index not tracking kills done by Umbra or spawned allies (Equinox Duality, etc) when the player is in Operator mode.
• Fixed being stuck in Spectator Mode after dying at the end of the Round as a Client and then becoming the Host.
• Fixed Revenant's Enthralled enemies not counting towards kills in Index.
• Fixed a second vote triggering if there are multiple players left after a Host migration.
• Fixed being in a broken state as a Client if the Host crashes after completing an Index wager.

Update 25.0 (2019-05-22)

• (Undocumented) Updated Gas Works map.

Update 23.10 (2018-10-12)

• Fixed issue where the Index would get stuck if there was a Host migration during the rewards screen between rounds.

Update 23.8 (2018-09-12)

• Fixed a crash that could occur if two people managed to tether themselves together (two M-W.A.M. Brokers in the Index).
• Fixed John Prodman spawning but is nowhere to be found in The Index.
• Fixed voice sounds for Rana Del (Index).

Hotfix 22.20.8 (2018-06-05)

• Fixed M-W.A.M Index enemies freezing and flickering when killed.

Update 22.20 (2018-05-17)

• Fixed Energy pickups in The Index getting duplicate spawns every time a Client picked one up.

Update 22.15 (2018-03-07)

• Fixed a script error when a Host migration occurred in The Index that resulted in the Timer not progressing.

Hotfix 22.13.4 (2018-02-22)

• Fixed not respawning in The Index if you die just as the Wager is met.
• Fixed losing your Credit investment in The Index if you win the match but don’t meet the Wager target. It now matches the UI description.

Hotfix 22.12.4 (2018-02-13)

• Fixed Index missions in the Glast Gambit quest rewarding the wrong amount of Credits, resulting in players losing Credits even when winning.

Hotfix 22.12.3 (2018-02-12)

• Fixed not being able to pick up Index points as a Client if the pick-up was too far away from you from the Host's point of view.

Update 22.12 (2018-02-09)

The Index Changes

Co-op games and the Index, not always a recipe for success. Often times your time spent in the Index is at the liberty of your squad mates. We have added individual extraction to The Index! When players reach their wager target, if they're winning, the game will pause and bring up the defense reward screen. Players will have the option of extracting or continuing.

If players continue, they earn the credits reward, and the wager target is reset so that they have the opportunity to reach it again for more rewards. If players extract, the game ends and they collect all the rewards they managed to earn. The initial investment fee is only taken away once, regardless of the number of times the reward was earned. If time runs out and players are losing, they forfeit all rewards.

• Required points per tier are now 50/75/100.
• Increased the required Index points from 25/50/100 to 50/100/200.
• Enemy levels scale half as fast.
• Changed the investment costs from 45k/60k/75k to 30k/40k/50k, and changed the credit returns from 120k/195k/275k to 105k/175k/250k. The amount of profit for each tier remains the same at 75k/135k/200k.
• Changed the rewards to give the total credit return and take away invested credits, instead of combining them into the net profit.

Update 20.0 (2017-03-24)

• All of the Index mission options available on The Index node on Neptune have been removed, except for the Endurance mode. This node is optional, and is not required to complete Neptune. Since Endurance modes play out with no explicit end, we've made all Index enemies drop all Index exclusive mods so that you can remain in the same Endurance mission without missing out on drops that the enemies don't spawn.

Update 19.6 (2017-01-11)

• Fixed performance issues.

Hotfix 19.5.6.1 (2017-01-05)

• Fixed a rare progression stopping bug in The Index if players are losing but then score enough to win just before the round ends.

Hotfix 19.5.6 (2017-01-04)

• Fixed absent transmissions causing a progression stopping bug.

Hotfix 19.5.5 (2017-01-03)

• The Index missions are no longer required as part of Neptune's completion.
• Fixed not being able to fully unlock Neptune due to The Index.

Hotfix 19.5.3 (2016-12-23)

• Fixed points scored in the last round not counting towards your Wager score.

Update 19.5 (2016-12-22)

• The Index was partially revamped, 2 new mods and a new team added.

Update: The Index Preview (2016-10-20)

• Introduced.

Last updated: Update 23.10 (2018-10-12)