Website and data research by 101Leafy.

101Leafy researched the fusion rules of the game, and this calculator runs them in the same order, special and three demon fusions included. Set the hero's level first: a demon above it cannot be made yet, and two elementals give the highest demon of their race at or below it.

Fuse demons

After you confirm a fusion, there is still a 1 in 256 chance of an accident, which gives a random demon instead.

Make a demon

How fusion works