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Kyuuyaku Megami Tensei Fusion Calculator
Super Famicom, 1995
Kyuuyaku holds both games, and each half keeps its own fusion: the MT I half fuses by group, the MT II half by race with a few changes from the Famicom game. Pick demons to see what they make, or pick one to list every way to make it. 101Leafy researched the game for these rules.
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Megami Tensei
Fusion rules
- The MT I half fuses by group like the Famicom game: each ally is in one of 23 groups, and the two groups decide the result. Every pair gives the same demon as on the Famicom.
- A pair with no entry for its two groups makes Dryad.
- Purushiki and Dodongo have no group and cannot be fused.
- There is no three-demon fusion and no elemental rule.
- The result is refused when its level is above the hero's level, not 7 above as on the Famicom.
Fusion groups
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 8
Group 9
Group 10
Group 11
Group 12
Group 13
Group 14
Group 15
Group 16
Group 17
Group 18
Group 19
Group 20
Group 21
Group 22
Group 23
Group chart
Find the first demon's group on the left and the second's along the top. The cell is the result, and a dash means Dryad.
Megami Tensei II
Fusion rules
- Two-demon fusion checks the special pairs first, then the elementals, then the race chart.
- An elemental moves a demon of the race on its row up one rank, only when the other demon is not an elemental too. Past the top of the race the result is the weakest demon of that race. Rakhe and Vepar have no row and use the race chart.
- Otherwise the race chart gives the result race. The result level is the average of the two levels, rounded up, and the result is the strongest demon of that race whose level is at most the average, or the weakest one when none fits.
- After that, a few results are swapped: Naga becomes Sphinx; Orthrus becomes Stonka; Atlas becomes Saleos; Sword Knight becomes Coatlicue; Ahura Mazda becomes Shiva; Baal becomes Shiva; Lucifer becomes Brahma.
- Three-demon fusion takes only these demons: Element, Holy, Genma, Divine, Kishin, Avatar, Deity.
- Three elementals make the demon of their trio in the table below, and any other trio of elementals makes Pixie. Three demons of one other race make the fixed demon of that race.
- With two elementals, the third demon moves one rank as for two of one race. With one elemental, the other two fuse as a two-demon fusion; when that gives the elemental itself, Salamander gives Earthy Slime and any other elemental gives the next weaker demon.
- Two of one race and one other: the odd one moves down one rank while it stays in its race, else up one.
- Three different races use the three-race table below at the average of the three levels, rounded up, and a trio not in the table makes a Holy demon.
- The result is refused when its level is above the hero's level. The moon phase does not matter, and fusion never has an accident.
Race chart
Find the first demon's race on the left and the second's along the top. The cell is the race of the result.
Special fusions
Elementals
Fused with a demon of the race shown, each elemental moves that demon up one rank.