Life stages
All 9 life stages in inZOI from Newborn to Senior: durations in in-game days, available skills and activities at each stage, aging mechanics, day length settings (48 minutes to 24 real hours), character creation restrictions, child-to-adult skill transitions, and lifespan controls.
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Overview
Zois progress through 9 life stages. Transitions happen instantly. One moment the Zoi is a child, the next they are an adolescent with a different body and new abilities. One in-game day lasts 96 real-world minutes by default, adjustable in Game Options > Simulation. The shortest setting compresses a day into 48 minutes; the longest stretches it to a full 24 real hours. Changing day length speeds up or slows down how fast time passes but does not extend a Zoi's overall lifespan in terms of in-game days.
There is no way to stop aging through normal gameplay. The cheat command stopAging true freezes all Zois at their current stage. The immortalZoi true cheat prevents death entirely.
All 9 life stages
Item | Description |
|---|---|
Newborn 1 day. Only occurs through pregnancy. The baby appears in a crib and cannot be directly controlled. Parents handle feeding and care automatically. Not selectable in Create-a-Zoi. | -- |
Toddler 2 days (cumulative | 3). Follows Newborn. Toddlers walk, talk in fragments, and develop 4 foundational skills. They sleep on toddler rugs or mattresses that spawn on the ground. Not selectable in Create-a-Zoi. |
Child 7 days (cumulative | 10). Attends elementary school (9 AM to 2 PM, five days a week). Gets homework. Can develop 6 child-specific skills. If a child's needs become critically low, Child Protection takes them away rather than letting them die. Selectable. |
Adolescent (5 days (cumulative | 15). Attends middle school (9 AM to 4 PM). Bridges child and teenager stages. Not selectable) only reachable through aging. |
Teenager 5 days (cumulative | 20). Attends high school (9 AM to 5 PM). Can drive cars. Gets access to teen-and-older skills (Cooking, Art, Instrument, etc.). Can die like adults. Selectable. |
Young Adult 10 days (cumulative | 30). Can attend university, pursue careers, get married, and have children through pregnancy. Can commit crimes. Full system access. Selectable. |
Adult 20 days (cumulative | 50). The longest stage. Full career access. Selectable. |
Middle-Aged 15 days (cumulative | 65). Full career access. Selectable. |
Senior Variable, roughly 17 days. Zois pass away from old age during this stage. Exact timing has some randomness. Selectable. | -- |
Character creation restrictions
Six stages are selectable: Child, Teenager, Young Adult, Adult, Middle-Aged, and Senior. Newborn, Toddler, and Adolescent are only reachable through gameplay. The same restrictions apply when adding a Zoi to an existing household.
Day length and lifespan settings
The day length setting controls how many real-world minutes equal one in-game day. At the default 96 minutes, a Zoi's full lifespan from Newborn to Senior death takes roughly 112 real-world hours (about 70 days of play at 90+ minutes per day). At the fastest setting (48 minutes per day), the same lifespan compresses to about 56 hours.
The 2026 Roadmap includes age adjustment options in Q1, giving players more control over how quickly Zois progress through stages. The Fate Engine and birthday calendar system will also provide new time-management tools.
Toddler skills
Toddlers have 4 foundational skills (max level 5):
Cognitive Development exploring and understanding objects
Emotional Development forming bonds
Language Development communicating through speech and gestures
Physical Development controlling the body and maintaining balance
Maxing a toddler skill gives a head start on the related grown-up skill.
Child skills
Children have 6 skills separate from the adult skill tree:
Creativity drawing, painting, playing instruments, video games
Motor Development treadmills, yoga mats, ball play, rocking horses
Responsibility cleaning, journaling, self-directed tasks
Social conversations and friend interactions
Aquatic Adaptability water comfort, transitions to adult Swimming skill (added in v0.3.0)
Curious Mind observing the world through fishing, mining (added in v0.3.0)
Skill transitions
Child skills do not carry over directly. Maxing them gives a boost to related adult skills. A child who maxes Creativity starts with higher Art and Instrument levels as a teen. Motor Development feeds into Fitness. The transition happens automatically at age-up.
Upcoming improvements
The February 2026 developer update previewed expanded baby features (infant strollers and more baby furniture interactions (changing tables, high chairs, bathtubs, bouncers)) responding to community requests. The 2026 Roadmap also includes childcare-specific urges in Q1 and per-family story progression with adjustable intensity toggles.
What happens after death
When a Zoi dies, the player gets a "Go Back In Time" option to load a previous save. If the Zoi's karma is low enough, they become a ghost instead of passing on peacefully. Surviving family members experience sadness and depression.