Cube Guide

The Cube, Decoded: the hidden EXP formula behind every item

The Cube shows you a progress bar.

No numbers. No EXP values. No way to know what actually levels it fastest.

TBH: Task Bar Hero · tested & verified in-game

The Cube screen in TBH showing a progress bar with no numbers — A bar. That's it. The game never tells you how much EXP anything gives.

So we worked out the formula from the game's own values and verified it in-game using Alchemy gold. The result is pretty clear: most players are feeding the Cube wrong.

The short version

The Cube isn't really about item grade. It's mostly about item level.

Materials — gems, crafting mats, soulstones — use a flat multiplier. Gear scales with item level. That single difference completely changes what the best Cube fuel is.

The formula

Every item you put into the Cube gives Cube EXP. Alchemy and Synthesis use the same calculation — the only difference is what you get back.

GEAR base(grade) × item-level scale × slot scale × rune multiplier MATERIAL base(grade) × 12 × rune multiplier

For Alchemy gold the shape is identical — it just uses the gold base value and your Gold From Cube Alchemy rune instead.

1. Base value by grade

Grade	Base Cube EXP	Base Alchemy Gold
Common	2	10
Rare	18	90
Legendary	54	270
Immortal	162	810
Arcana	518	2,592
Beyond	1,658	8,294
Celestial	5,803	29,029
Divine	20,311	101,602
Cosmic	71,089	355,607

Each grade jumps about ×3.2 over the one below. But grade is only the start.

2. Item level is the real multiplier

This is the part that isn't shown on the Cube screen. Gear is multiplied by item level:

Item level	×Cube EXP	Item level	×Cube EXP
L1	×1	L50	×1,428
L10	×40	L60	×1,836
L20	×240	L70	×2,244
L30	×612	L80	×2,652
L40	×1,020	L90	×3,060

Materials do not scale with level. Gems, crafting materials and soulstones get a flat ×12 instead. That's the key — a high-level gear piece can massively outperform a same-grade material.

3. Slot matters too

Slot	×	Slot	×
Amulet	×4	Weapon / Armor	×1
Ring / Earring / Bracer	×3	Helmet	×0.8
Off-hand (Orb, Shield, Tome…)	×2	Gloves / Boots	×0.75 / ×0.7

The big takeaway

Stop thinking of the Cube as a gem dump. At the same grade, materials are flat — gear scales with level. Here's the cube exp per item, all Cosmic, before runes:

Item fed to the Cube	Cube EXP
Cosmic material	853,068
Cosmic L1 weapon	71,089
Cosmic L90 weapon	217,532,340
Cosmic L90 amulet	870,129,360

A high-level accessory gives around 1,000× the Cube EXP of a same-grade material. Level is everything. If you're feeding gear to the Cube, feed your highest-level pieces — especially accessories.

How we verified it

Cube EXP itself is hidden. But Alchemy gold is a visible number — so we tested it.

The formula predicted that a Legendary level-50 weapon would alchemize for exactly 234,468 gold. The game showed 234,468.

Alchemy screen showing Gold from Alchemy: 234,468 — matching the predicted value — Predicted 234,468. The game showed 234,468. Several more items matched exactly (a Rare L30 amulet → 181,584, and so on).

That confirms the exact structure the Cube uses: grade base × level scale × slot scale × rune. Cube EXP uses the identical structure with the cube-exp values.

Runes multiply everything

Two Cube runes scale your output — but each applies to its own thing:

The Increased Cube EXP rune multiplies your Cube EXP.

The Increased Gold From Cube Alchemy rune multiplies your Alchemy gold.

Same formula shape, separate rune effects.

A +30% rune means ×1.3 on its side — and these can be leveled well past +30%.

Rune screen showing +30% Increased Cube Exp and +30% Increased Gold From Cube Alchemy — Your personal multiplier. These can be leveled well past +30%.

Alchemy or Synthesis?

For Cube EXP, it doesn't matter — both give the same EXP from the same item. The difference is the reward:

Alchemy gives you gold back. Synthesis gives you a grade-up item (and costs some gold). So: Alchemy if you want gold, Synthesis if you want progression materials. The Cube EXP is the same either way.

The final rule

Feed the Cube your highest-level gear first. Priority:

1. High item level
2. High grade
3. Accessory slots
4. Cube EXP rune investment

Gems and materials are convenient. High-level gear is where the real Cube EXP is.