How exactly new dragons are made?

Genes are passed to the next generation in the following way:

Same body parts of both parents are part-by-part compared with each other.

• If they are from the same set, then there is an 90% chance that the new dragon will receive body part with the same set, and 2% chance for any other set.
• If they are from different sets, then the new dragon has 40% chance to receive parent#1 set, 48% chance to receive parent#2 set, and 5% chance for any other set.

or example, if parent#1 has head from set#1, and parent#2 has head from set#3, then the new dragon has a 40% chance for head from set#1, 40% chance for head from set#3, and 5% to each of sets left.

If dragons have 4 or more of parts of body are similiar, the chance of hatchling to receive these parts are reduced to 60%, and chance to get another set is increased to 8% each.

During the breeding new dragon’s rarity is defined as average rarity of it’s parents, but it can shift towards higher or lower rarity levels.

Passing rarity level to new generation
	weight	save	rise	lower
common	1	99%	1%	0%
	1.5	95%	5%	0%
uncommon	2	65%	12%	23%
	2.5	65%	18%	17%
rare	3	45%	9%	46%
	3.5	45%	14%	42%
epic	4	30%	6%	64%
	4.5	30%	9%	61%
legendary	5	10%	0%	90%

Before the start of the breeding, weight of new dragon is calculated as average rarity of parents, i.e (Parent1.Weight + Parent2.Weight)/2. Then according to weight of new dragon his chances to get the rarity are defined.

For example, parent#1 is epic, and parent#2 is rare. Their average weight is defined as (4+3)/2=3.5. According to this weight, new dragon has 45% chance to stay rare, 14% chance to be epic, and 42% chance to be uncommon.

Time consumed for creating new dragon depends on parent’s rarity. It’s calculated based on the following:

 

Time of breeding for a one parent
rarity	days
Common	0
Uncommon	0.5
Rare	1
Epic	2
Legendary	4

Time of the breeding process is mostly affected by parents' rarity and their power. The rarer and stronger are parents, the more time they will need to conceive a new hatchling. On the other side players can use their mana potions to skip breeding timer. 1 minute of breeding equals to 1 mana potion.