Succeeded by
Endo since Update: The Silver Grove

For its ancient kind, see Mod TT 20px.png Ancient Fusion Core; for its legendary kind, see Legendary Core.

Fusion Cores were a type of mod that were used in fusion to upgrade mods. Unlike some mods, Fusion Cores could be obtained from any faction. When dropped by an enemy on a map, they appeared identical to a normal mod.

When fusing mods to upgrade them, Fusion Cores could be substituted for regular mods to increase the upgrade energy of a mod. The amount of energy given to a mod when a Fusion Core is used depends on its rarity and level. The higher level the Fusion Core, the more upgrade energy will be applied to the mod during fusion. Fusing rarer mods and cores is therefore much more cost efficient than fusing common versions.

Fusion Cores could also be sold for a various amount of Credits64.png Credits.

Notes[edit | edit source]

  • Up until Update: The Silver Grove, there were four types of fusion cores, with one being extremely rare.
    • Common: 1 - 3
    • Uncommon: 1 - 5
    • Rare: 1 - 5
    • Legendary: 0
      • Was given out to players with the change in number of ranks for Steel Charge, rank 10 changed to rank 5. Distributed to players who had a Mod TT 20px.png Steel Charge mod that was rank 6 or higher before Update 12.2.
      • Legendary Cores can be obtained as a reward item in Sortie Missions as of Update 18.0.
  • Early planets could drop Common 0-2, and more rarely Uncommon 3.
  • A core's total quality/grade can be abbreviated using the first letter of its rarity followed by its numeric rank. For instance, if the Alert Twitter feeds say a mission reward is '3x R5 Fusion Core Pack (Item)', then it will award three Rare rank 5 Fusion Cores.
  • A good place for farming fusion cores of all types is Triton, Neptune or Hieracon, Pluto.
  • R5s (3150c per core used in a fusion)
    • 132 for a common to +10 (415,800 Credits)
    • 264 for an uncommon to +10 (831,600 Credits)
    • 396 for a rare to +10 (1,247,400 Credits)
    • 528 for a legendary mod to +10 (1,663,200 Credits)
  • % cost of maxing a rank 10 mod.
    • 25% from 0 - 8
    • 25% from 8 - 9
    • 50% from 9 - 10
      • Ex: Legendary/Primed Mod from 0-8 would be 132 r5, 8-9 would be 132 r5 and 9-10 would be 264. Total: 528 R5 cores.

Trivia[edit | edit source]

A Rare Fusion Core, Rank 10. Discontinued in Update 7.

  • During the mod system change between Update 6 and Update 7, all of the previous mods were turned into Fusion Cores to be used in the Update 7 system. During this conversion, all of a player's mods were turned into a random core between the rarity of Common 0/10 up to Rare 10/10. After the conversion, Common Cores were maxed to 3/3, while Rare and Uncommon topped off at 5/5. There is currently no way to obtain #/10 mods, as they can't be traded. They have since been retitled as "Ancient Fusion Core" in Hotfix 14.0.9.

Media[edit | edit source]

Patch History[edit | edit source]

Update: The Silver Grove

  • Removed and replaced with Endo.

Hotfix: Specters of the Rail 8

  • Partially fixed a UI issue related to full information about Fusion Cores in Alerts not being displayed.

Update: Specters of the Rail

  • The Alert generator has had some trimming done with the removal of Void Keys and some Credit Alerts which ultimately reduces the time it takes to complete an Alert Cycle from approximately 15 days to approximately 10 days. All Credit Alerts now have a chance to spawn with a random Fusion Core as well. With this faster Cycling through Alerts, you should see more things you want return faster!

Hotfix 18.4.10

  • Sorties will give 25 R5 Fusion Cores upon completion in addition to a prize from the Sortie Season from now until February 16th when Divine Will ends. Praise the Void!

Hotfix 18.4.7

  • Fixed the 50 R5 Fusion Core Sortie Reward displaying as having given 25 in the EoM screen, even though it has actually provided 50.

Update 18.1

  • Fixed Rank 3 Fusion Cores being represented in the UI of Sortie Rewards instead of Rank 5 Fusion Cores. This was a UI bug only.

Update 18.0

  • Dark Sector Survival and Dark Sector Excavation missions reward tables have been updated to better match regular missions, including the addition of Void Sabotage Keys to Rotation B and Fusion Core bundles.

Hotfix 17.5.5

  • Fixed Fusion Cores showing up in a Mod Search that doesn’t explicitly search for Fusion Cores.

Hotfix 17.4.1

  • Fixed players being able to transmute Legendary Fusion Cores.

Update 17.3

  • Forma Blueprints will now only drop in one rotation, replaced by the following drops in these endless Mission rotations:
    • T3D Rotation B: Forma BP for Uncommon Fusion Core 5 Pack.
    • T4S Rotation A: Rare Fusion Core 5 Pack for Uncommon Fusion Core 5 Pack.
    • T4S Rotation B: Forma Blueprint for Rare Fusion Core 5 Pack.
  • Increased the number of Fusion Core stacks in Derelict Defense Tier B to triple stacks.

Update 17.2.4

  • Changed number of Uncommon Fusion Cores given in Ocean Sabotage Caches to 3 instead of 5.

Update 17.2

  • Fixed unranked uncommon Fusion Cores being rewarded in Archwing Interception.

Update 17.1

  • Fixed the Fusion Core icon improperly appearing on Mods.

Update 17.0

  • Mods that previously affected Stamina have now been converted to the appropriate amount of Fusion Core.

Update 16.9

  • Added Rare 5 Fusion Core Bundles and Uncommon Fusion Core Bundles to Hard/ Easy Archwing Interception reward tables, respectively.

Hotfix 16.5.5

  • Fixed Transmutation and Fusion cores appearing when players enable the “Show Maxed” filter in the Mod menu.

Hotfix 15.13.7

  • The following Missions / Rotations have been updated to include a pack of 5 Rare Fusion Cores as a reward:
    • Hard Survival Missions (Enemy Level 20+), reward available on Rotation A.
    • Hard Interception Missions (Enemy Level 20+), reward available on Rotation B.

Update 15.13

  • Increased the amount of Fusion Cores you get in Void Survival Rewards depending on tier of Survival being played.

Update 15.2

  • Fixed issue where using the search bar for Mods would always display Fusion Cores in the results.

Update 15.1

  • Fixed only seeing Fusion Cores when prompting the Mod Inventory screen.

Update 15.0 On Login, the following will occur for all accounts:

  • All Ability Mods converted to Fusion Cores of the appropriate level.

Hotfix 14.7.2

  • Fixed unranked fusion cores being awarded from Grineer Caches.

Update 14.6

  • Fixed an issue with Mod filters hiding fusion cores.

Hotfix 14.0.2

  • Fixed ‘Sell all Duplicates’ Selling all Fusion Cores.

Hotfix 13.9.1

  • Fixed an issue with Rank 0 Rare Fusion cores being rewards in several Void mission types.

Update 13.9

  • Fixed an non-existent Fusion Core appearing in the codex resulting in confusion over completion of total cards.

Hotfix 13.7.1

  • Removed single fusion cores from T4 Void rewards for Defense, Capture, Mobile Defense, and Survival, replaced with bundles of 5 R5 cores.
  • Fixed issues where non-max-rank Fusion Cores could not be properly sold.

Update 13.3

  • Fixed Auto-Fusing not working if there is only 1 Fusion Core/Duplicate available to fuse.

Update 12.2

  • Added some safety checks so that auto fuse never grabs installed mods or fused mods that aren't Fusion Cores.

Hotfix 11.6.1

  • Fixed Fusion Cores being eligible for Transmute when selected in first slot.

Hotfix 11.5.7

  • Changed Orokin Derelict Survival rewards:
    • 1K Credit Caches replaced with 2.5K
    • 1.5K Credit Caches replaced with 5K
    • Common Fusion Cores replaced with Uncommon or Rare Cores.
  • These changes occurred because the existing 1K/Common Rewards were far too low considering the enemy levels and difficulty of the mission. We will be monitoring feedback here and are discussing further options with rewards.

Hotfix 11.5.2

  • Fixed unranked fusion cores being given as Survival Rewards.

Hotfix 10.0.7

  • Fix for Unranked Fusion Cores being offered as a mission reward.

Hotfix 9.5.3

  • More loot table changes! All enemies now have a chance to drop Fusion Cores.

Update 9.3

  • Fusion Core Bundles: 3 tiers to choose from in the Market.

Hotfix 8.3.1

  • Fixed rank 0 fusion cores being a defense reward.

Hotfix 7.8.1

  • UI Properly filters out old fusion cores.

Update 7.8

  • Fixed additional cases of old accounts missing fusion cores.

Hotfix 7.7.4

  • Fixed older accounts missing fusion cores.


  • Introduced.

See Also[edit | edit source]

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