Katy Webb is running for administrator of Nukapedia. Click here to vote!
Gain is a perk in Fallout 2 and Fallout Tactics. In later games, it was replaced by Intense Training.
This is a series of perks (Gain Strength, Gain Perception, etc.) which will modify the selected primary statistic by +1. Each statistic can only be boosted once, and only to your racial maximum.