Age Your Sims

Tested on game patch 1.126.73.1030

Age up the Sims around you without switching households, chasing down birthday cakes, or opening the cheat console. Pick individual Sims from a list, or move an entire life stage forward at once.

Every Sim advances by exactly one life stage. Nothing skips ahead.

What it does

Click any Sim (Child or older) and open the mod's pie menu.

Select Sims to Age Up... Opens a picker showing every eligible Sim in the world, sorted by life stage, with their current age, what they'll become, and their household. Tick up to 20 and confirm.

Age Up All ... One-click bulk actions for a whole life stage:

Newborns → Infants
Infants → Toddlers
Toddlers → Children
Children → Teens
Teens → Young Adults
Young Adults → Adults
Adults → Elders

How it behaves

Nothing changes until you confirm. Every action shows a confirmation dialog listing the Sims it's about to affect. Cancel and nothing happens.

It uses EA's own age-up. The mod calls the game's built-in age transition rather than forcing an age value, so Sims get their proper aging behaviour — outfit changes, life stage traits, family reactions. Infants receive a randomly assigned infant trait exactly as they would from a normal birthday.

Every transition is verified. After each Sim ages, the mod checks that they actually reached the expected life stage. If one doesn't, it's reported by name instead of failing quietly. You get a results notification and a matching console log: how many were selected, how many aged, how many failed.

Who gets skipped

Skipped	Why
Elders	Nothing to age into
Pregnant Sims	Aging mid-pregnancy is untested
Occult Sims	Several occult types have their own aging rules
Ghosts and deceased Sims	Not eligible for aging
Pets and other non-human Sims	Different aging ladder entirely

Occult coverage includes Aliens, Vampires, Mermaids, Spellcasters, Werewolves and Fairies. A vampire currently in human form is still recognised and skipped.

Please note

The mod lists all Sims in your world except the active sim, including your own active household. They appear in the picker with their household name shown, and you can untick them — but the bulk "Age Up All ..." actions will act on all eligible sims including your active sim, so read the confirmation list before accepting.

Aging up is not reversible by this mod. If you're unsure, save first.

Installation

This mod needs both files:

Baciaangi_AgeYourSims.package
Baciaangi_AgeYourSims.ts4script

Enable Custom Content and Mods and Script Mods Allowed in Game Options → Other, then restart the game.
Place both files in your Mods folder, either directly or in a single subfolder preferably. Script mods will not load if buried more than one folder deep.
If you're updating, delete the previous version's files first. Leaving an older .ts4script alongside a newer one causes both to load and behave unpredictably.

⚠️ Requirements

XML Injector script

Compatibility

Verified against game patch 1.126.73.1030.

The mod doesn't override any EA tuning — it adds its own interactions to Sims — so conflicts with other mods are unlikely. No conflicts are currently known.

Script mods do break when EA changes the underlying code. If a patch lands and things stop working, let me know.