Cubes

How the Cube system works — special support gear for your characters in NIKKE.

Cubes are a special piece of equipment attached to each character to boost stats or trigger extra effects; there are several types (Resilience, Bastion, Onslaught, Healing, Quantum…) suited to different roles.

Resilience Cube Reload Speed Increases Reload Speed

Bastion Cube Ammo Refund Refunds a portion of ammo on fire (ammo refund) — has no effect on Nikkes with a 'last bullet' mechanic

Wingman Cube Max Ammo Increases magazine capacity (Max Ammo capacity)

Adjutant Cube Charge Speed Increases Charge Speed

Assault Cube Hit Rate Increases Hit Rate; from level 5 also adds elemental damage (strong element type)

Onslaught Cube Charge Damage Increases Charge Damage; from level 5 also adds a significant amount of elemental damage

Quantum Cube Burst Generation Increases Burst gauge charge speed (Burst generation)

Relic Vigor Cube Max HP Increases Max HP

Endurance Cube DEF Increases DEF stat

Healing Cube Healing Increases HP Potency (healing received); if the wearer is a Nikke with a healing skill, also increases Heal Provided

Relic Tempering Cube Damage Reduction Reduces incoming damage (damage taken reduction)

Relic Assist Cube Critical at Low HP Increases HP when HP drops to a low threshold (Critical HP, triggers around ~20% HP) — an emergency defensive line.

Destruction Cube Part Damage Increases Part Damage — usable with ANY character as long as the boss has a part-break mechanic (parts)

Piercing Cube Pierce Damage Increases Pierce Damage (piercing damage)

Which Cube to Prioritize

NIKKE has 14 Harmony Cubes in total, but most of your upgrade resources should go into a handful of genuinely worthwhile cubes rather than spreading thin. The Resilience Cube is the strongest default pick, fitting almost any character on your team — if you're only investing deeply in one cube first, this is it, and it's worth pushing to Lv15 through the Union Shop.

Beyond Resilience, which cube to run next depends on the character's role. The Bastion Cube is best for uptime, edging out Resilience slightly for characters with high max ammo — this group should prioritize Bastion over Resilience. The Relic Tempering Cube reduces damage taken, making it the best fit for characters playing tank or absorbing hits for the team. For characters that scale off Max HP to boost damage or healing (such as 2B, Rapunzel), Vigor (Relic Vigor) is a sensible pick since the added HP directly feeds their kit.

The Onslaught Cube is best-in-slot (BiS) for a handful of specific characters but fairly niche, so it shouldn't be treated as a universal pick. The Assault Cube, on the other hand, has been outclassed by other cubes and is no longer worth spending battery to upgrade.

How to Upgrade Cubes

Cubes are upgraded using battery obtained from the Union Shop — this is the main source for raising Harmony Cube levels. Since upgrade resources aren't unlimited, the efficient approach is to concentrate battery on one cube at a time before spreading to another, rather than leveling all 14 cubes evenly.

Following the priority order above, the Resilience Cube should be the first upgrade target, pushed to Lv15 through the Union Shop since it's the most broadly useful pick for any team. Once Resilience is set, route the next batch of battery toward whichever cube fits your character's specific role — Bastion for high max-ammo units, Relic Tempering for tanks/damage soakers, or Vigor for Max HP scalers.

Avoid pouring battery into the Assault Cube, since it's already been outclassed by other cubes; redirecting that battery toward a cube that actually serves your team's role is the better long-term investment.

Cube Stats Table (Lv 1-15)

Lv	ATK	DEF	HP	Slots	Credit	Battery
1	390	78	11,800	1	0	0
2	450	90	13,600	2	10K	10
3	520	103	15,600	2	20K	10
4	600	119	17,900	3	40K	30
5	690	136	20,600	3	80K	30
6	790	157	23,700	4	160K	50
7	910	180	27,300	4	240K	50
8	1,050	207	31,400	5	320K	70
9	1,200	239	36,100	5	400K	70
10	1,380	274	41,500	6	480K	100
11	1,590	316	47,700	8	480K	100
12	1,830	363	54,900	8	480K	100
13	2,100	417	63,100	10	480K	100
14	2,420	480	72,500	10	480K	100
15	2,780	552	83,400	10	480K	100

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