Cube Synthesis Simulator

Synthesis consumes 9 items of the same grade and rolls the result grade by weight. Low grades always rank up, but Immortal and above carry a retention chance. Odds are taken straight from the game data.

Your synthesis results

Syntheses
0
+1 rank
0
+2 ranks
0
Retain
0

Try synthesizing in the cube below — your results are tallied here.

Try synthesizing

Synthesis
Material grade
Same grade [불멸] chance49.9%
Higher grade [아르카나] chance49.9%
Two grades higher [초월] chance0.249%

Synthesizing 9 items of the same grade yields a higher-grade item. Pick a grade and hit Synthesize. The result follows the odds shown below — and from Immortal up, it can also stay the same grade (retain).

Grade transition odds

Material gradeResult
일반고급95.2%+1 rank희귀4.76%+2 ranks
고급희귀96.2%+1 rank전설3.85%+2 ranks
희귀전설97.6%+1 rank불멸2.44%+2 ranks
전설불멸99.0%+1 rank아르카나0.990%+2 ranks
불멸불멸49.9%Retain아르카나49.9%+1 rank초월0.249%+2 ranks
아르카나아르카나66.6%Retain초월33.3%+1 rank천상0.166%+2 ranks
초월초월76.9%Retain천상23.1%+1 rank신성0.077%+2 ranks
천상천상83.3%Retain신성16.7%+1 rank우주0.017%+2 ranks
신성신성90.9%Retain우주9.09%+1 rank
우주Top grade (cannot be synthesized further)

Expected cost

Expected syntheses
47.1 ×
Starting-grade materials needed (expected) (불멸)
377.7 pcs
Syntheses per grade (expected)
불멸44.4×아르카나2.7×

Each synthesis consumes 9 same-grade materials. Values account for retention and +2-rank jumps (no downgrades occur in the data).

Synthesis simulation

Runs many trials of reaching the target from the start grade you chose above, showing the average, spread and distribution of syntheses needed.