#Pets, Sizes & Mutations

#Income formula

Only placed pets earn. IncomeService.recompute sums pet.income over profile.placedPets and then applies the player multipliers:

total = base × (1 + friendBonus) × incomeMul × max(1, incomeBoostMul)

friendBonus — up to Config.Economy.FRIEND_BONUS_MAX = 0.5, at +0.1 per friend.
incomeMul — 2 with the DoubleMoney pass.
incomeBoostMul — temporary boosts from the boss shop or from admin abuse.

The tick runs every Config.Economy.INCOME_TICK (1 second) and adds rate × real elapsed time, so a lagging server does not lose income. Config.Economy.OFFLINE_INCOME is false: nothing accrues while the player is away.

#A single pet

MutationService.computeIncome is the per-pet formula:

income = baseIncome × sizeIncomeMultiplier(weightRatio) × mutationMultiplier

baseIncome comes from Catalog: Config.PetIncome[id] first, then the wiki value, then zone.incomeBase × Config.RarityIncomeMul[rarity]. The size curve is deliberately sub-linear:

r = weight / baseWeight
if r <= 125:  mul = r ^ (37/60)
else:         mul = 125 ^ (37/60) × (r / 125) ^ (2/5)

That is the Config.Size.DIMINISHING_THRESHOLD = 125 soft cap. Past 125× a pet's base weight, extra weight buys far less income — the reason a Colossal is strong but not game-ending.

#Size buckets

Config.Size.Buckets is both the roll table and the labels shown in the UI. The weights add up to 100, so they read directly as percentages.

Bucket	Roll weight	Weight multiplier
Tiny	32	0.55 – 0.85
Small	36	0.85 – 1.25
Normal	22	1.25 – 2
Large	6.5	4 – 8
Huge	2.5	8 – 16
Giant	0.8	16 – 32
Titanic	0.17	32 – 60
Colossal	0.03	60 – 100

Visual scale is handled separately: MutationService.visualScale maps the weight ratio onto VISUAL_MIN = 0.6 … VISUAL_MAX = 2.6, so a Colossal pet looks huge without literally being 60× the model.

#Mutations

Config.Mutations lists every mutation with its income multiplier and how it is obtained. Only entries with naturalWeight > 0 can roll at hatch time, using Config.MUTATION_ROLL_DENOMINATOR = 100 — so those weights are percentage chances.

Mutation	Multiplier	Natural weight	Source
Normal	1	—	default
Silver	1.2	6	hatch
Bloom	1.25	0	Great Bloom event
Golden	2.5	4	hatch
Spirit Bloom	2.5	0	Sakura Incubator
Fractured	2.75	0	Mutation Shard consumable
Parasite	3	0	Parasite event
Rainbow	3.5	1	hatch
Monstrous	3	0	Hungry Frog event

Config.MUTATION_SHARD_CHANCE = 0.10 is the chance a mutation shard rolls Fractured when consumed. MutationService.applyEventMutation refuses to apply a mutation that already has a natural roll path, which keeps event rewards from double-dipping.

#Rarities

Rarity	Rank	Income multiplier	Base weight	Model scale
Common	1	1	1	1.0
Uncommon	2	2	1.5	1.05
Rare	3	4	2.5	1.1
Epic	4	8	4	1.2
Legendary	5	16	6	1.8
Mythic	6	32	9	2.6
Cosmic	7	64	14	3.6
Secret	8	128	20	5.0
Eternal	9	256	30	7.0
Divine	10	512	45	10.0
Event	11	64	14	4.0

Rarity drives glow as well: Features.Glow starts lighting models from rank 5 and adds sparkles from rank 8.

#Pet slots

Config.Pen defines base capacity. Each level costs cash and unlocks more slots, up to MAX_LEVEL = 11:

Level	Price	Slots
0	0	7
1	1,000	7
2	1,000,000	9
3	75,000,000	10
4	500,000,000	11
5	1,000,000,000	12
6	50,000,000,000	13
7	500,000,000,000	14
8	1,000,000,000,000	15
9	25,000,000,000,000	16
10	100,000,000,000,000	17
11	500,000,000,000,000	18

Extra setting	Value
`Config.Plot.PET_SLOTS_MAX`	22 — hard ceiling including pass bonuses
`Config.Plot.PET_SLOT_SPACING`	9 studs minimum between placed pets
`ExtraSlots` pass	+4 slots on top of the pen level
`equipBestPets`	Places your strongest pets into the available slots

Placed pets walk around the pen while Features.Base.PET_ROAMING is on (PetRoamService), and only placed pets count toward income.

#Announcements

Features.Announcements publishes hatches at or above MIN_RARITY_RANK = 8 (Secret and up) and forwards rank 10+ (Divine) to other servers over the SAE_Announce MessagingService topic with a three-second cooldown.