Core Linking

Core Linking is the process of using one of your unit as a "core" to "link" with another unit, increasing the latter's Stats, but also its Sortie Cost.

Legacy Item

Since the update of ver 2.5.26 on 26th December 2023, Self-Learning Algorithm has been integrated as the basic feature of the game, and Link Breaker is rendered useless, thus removing linking/switching Full-Linked Bonus are free actions, fully.

Core Linking

In order to Core Link, the unit must have a free Core Link Slot (Unlocked at level 10/30/50/70/90 to a maximum of 5). Click on an empty slot then either use a Proxy Core (S-Rank Core for S-Rank or lower Units, SS -Rank Core for SS-Rank Units) or select the unit being used as the "core".

Each Unit have a specific compatibility with the main unit (depending on Rarity, Class and Type), except duplicates, which have 100% compatibility. The unit used as Core Link will be lost permanently.

Alternatively, you can use a Proxy Core as the "core" instead of units. These Special fodders transform into the duplicate of the main Unit, creating a link with 100% compatibility.

• 

  SS-Rank Proxy Core

• 

  S-Rank Proxy Core

You can freely remove a link from a unit.

NOTE: Although you can use any Units for Core Linking, but it’s ill-advised to use anything other than a duplicate or a Proxy Core, because using a non-duplicate will give a lower stat boost, and will not count towards the unit’s Full Link Bonus, which needs maximum Compatibility.

NOTE 2: Removing a Link will destroy the linked core/unit.

NOTE 3: The compatibility only depend on the Unit being used as the "core". Level and Upgrades do not affect Link Compatibility.

Link Bonus

The Stats that is raised by Link Compatibility. Each 100% Compatibility increase Unit's Stats as follows:

• HP +20%
• ATK +20%
• Differs Between Units
• EXP +4%

List of possible Stats for the 3rd Bonus:

• Skill Multiplier +2%
• HP +5%
• DEF +3%
• SPD +0.02
• CRIT +2%
• EVA +2%
• ACC +7%

NOTE: Skill Multiplier is additive to Active Skills' Original multiplier. For example, if the skill's original multiplier is 245% and the bonus multiplier is 15%, multiplier of that skill become 260%.

Full Link Bonus

Unlocked when a unit reaches 500% Compatibility (all 5 Cores are Duplicates/Proxy Cores). Unlike Link Bonus, you may only choose to use one of the 5 given Bonuses at a time. Changing Full Link bonus is a free action.

Possible Full Link Bonuses:

• Sortie Cost -XX%
• Skill Multiplier +XX%
• Differs Between Units
• Differs Between Units
• SPD +XX

Possible generic options for the 3rd and 4th Full Link Bonus:

• Range +1
• CRIT +20%
• Buff/Debuff Level+2
• ACC +75%
• HP +20%
• EVA +20%

NOTE: Skill Multiplier is additive to Active Skills' Original multiplier. For example, if the skill's original multiplier is 245% and the bonus multiplier is 15%, multiplier of that skill become 260%.

NOTE 2: Buff/Debuff Level+2 only affects Effects listed in Skill Effects in Unit Details and not multiplier.

NOTE 3: Certain units have unique Link Bonuses available only to them. An example for this is Frigga who gets 50% HP instead of 20% and Cyclops Princess/Goltarion who don't have max HP bonus.

FAQ

Is it worth linking unit that's not 100%?

Unless you're absolutely sure what you're doing (Since you're asking this, I assume no), then no.

Do I need to level up the spare units that I am going to use as a core link?

No.

Who should I focus my SS Proxy Core on?

Invincible Dragon, Labiata, and Lemonade Alpha. After that it's up to you.

Which link bonus I should choose for <Insert unit here>?

The one you need. Do you need more base damage? Pick the skill multiplier. More stat? Pick stat. Faster unit? Pick SPD. Sortie cost down? Pick sortie reduction. Higher buff/debuff power? Take buff/debuff level. Don't know which to pick? Don't pick any until you do. You will soon find out as you play the game.

Is it worth linking <Insert unit here>?

Think, player. Does linking that unit worth the increased cost of deploying that unit? What does linking adds up to a unit? Read Core Linking to find out.

Alternatively, simply keep a full link and a no link copy of said unit. Because you can (with exception of Invincible Dragon, Labiata, and Lemonade Alpha).

I cannot link my unit. The error pop-up has yellow/orange text under white text.

That unit is in a squad preset. Remove them from the preset.

If I rank up a unit to SS, do I have to use the SS Proxy Core to link them?

No.