What determines SPECIAL inheritance in children?

In Fallout Shelter you're able to make babies when you assign a male and female dweller to a residential area. When the babies are born, what determines the SPECIAL stats? It seems to be somewhat influenced by their parents, but there seem to be other variables. I want to breed children with high SPECIAL scores.

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2 Answers

The highest average stat between the two parents determines what the child's highest stat will be. However, it only decides what the highest stat will be, not the value of that stat.

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The SPECIAL stats are randomly generated for each dweller. You can upgrade their SPECIAL stats though with these rooms:

  • Classroom - Intelligence
  • Armory - Perception
  • Weight Room - Strength
  • Athletics Room - Agility
  • Fitness Room - Endurance
  • Lounge - Charisma
  • Game Room - Luck
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