What does the maturity value of a Sylesti mean? And how does it work?

Maturity value just tells how long it'll be til ladulthood (if gene tested) or what stage the sylesti is at (gene tested or not)

QUite important for breeders. Otherwise, ignore it.

Maturity generally progresses at a rate of 1:1 with Age, but can progress faster via Views/nurtures/magical pies. These can increase the maturity value so that it reaches the next life stage sooner than it's Age would suggest.

Sylesti are egglings from values 0 to 72, hatchlings from 72 to 216, hit adolesence at 216, and hit adulthood at 648, which is when the maturity value stops increasing.