Hidden traits

In addition to the 60 traits, there are 8 hidden traits that child could inherit from their parents. Some of this are generated from NPC's.

Pyromaniac

Ignite random things around you, can flambè fruits,

Immune to Fire

Sim becomes fireproof

Makes No Messes

Sim will not make any mess

Burglar

Sneak anywhere

Can apprehend Burglar

Should be able to apprehend burglars

Can Salute

"Salute" appears under Friendly pie menu

Pizza Appreciator

More positive mood points for eating pizza

Rocker

Natural feeling of rock-stardom

The Sims 3 World Adventures hidden traits

With the expansion The Sims 3 World Adventures there are few new hidden traits.

Mummy

It's not a really true hidden trait.

Asian Culture

Chinese-themed idle animations, chopsticks, etc

Egyptian Culture

Sing Middle Eastern songs autonomously, etc

French Culture

Sing French songs autonomously, etc

The Sims 3 Ambitions hidden traits

Frankensim - Simbot

As the mummy trait, it's not a really hidden trait.

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• Hidden traits unlocked