Intelligence/Fallout 2/Low

Low Intelligence is a gameplay mechanic where the player character has an Intelligence of 4 or lower.

Gameplay

 * The Chosen One may meet Torr, the "town simpleton of Klamath," who would normally give them a quest to help protect his brahmin against "the evil bugmen." If the player character has low Intelligence, however, he will appear to be highly intelligent.
 * AHS-9 understands what the Chosen One tries to say after an alignment, and gives the quest to kill the Shi Emperor.
 * At the Den, low Intelligence characters still have the option to become a Slaver, and they will still receive a reward from Becky for killing Metzger. Killing Metzger is also the only way for Low-INT characters to free Vic, and he will still be available as a potential companion regardless of Intelligence.
 * For Low-INT characters, the quest Something strange is happening at the farm northeast of Modoc. Investigate and report back to Jo is different. It will be presented to them while talking with Jo at Modoc. If they agree, all they have to do is travel to the Ghost Farm and talk to Vegeir. It is followed by Deliver Slag message to Jo in Modoc. One will be rewarded with the location of the Gecko town, which Jo mistook for a G.E.C.K. They will also receive an additional reward for completing the quest Farrel has a rodent problem in his garden. Remove the infestation, a cookie.
 * At Vault City, Skeev will try and enslave a Low-INT character. If one allows it, they will trigger a brief cinematic at the Servant Allocation Center with Barkus, before being automatically transported to Vault 8. If the Auto-Doc in the courtyard has been repaired, then the unmarked quest Auto-Doc Rodeo becomes available. This quest gives 2 unique perks which are determined by ones Luck stat.
 * A Low-INT character will speak a unique line after hitting Lumpy at Broken Hills with their Highwayman.
 * The mutant sheriff of Broken Hills Marcus, may become provoked if insulted by a Low-INT character, which makes him turn hostile.
 * When talking to Algernon in the basement of New Reno Arms, the Chosen One can start a childhood "cop and robbers" type dialog in which they accidentally "shoot" and kill him.
 * "Take care of Officer Jack" for Mira is a unique quest available only to player characters with an Intelligence stat of below 4 and a Strength stat of 7 or above. Also, the quest Retrieve Parts/Gain Access to Vault 15 is still available and one can still have a normal conversation with President Tandi at the NCR town.
 * Gruthar allows the Chosen One to enter Vault 13 freely if they have a Low-INT.
 * Low Intelligence characters are presented with an additional option when it comes to completing the Navarro quest You need to use a FOB to access the navigation computer. They can lie to the base commander's room guard after they are mistaken as clean up crew, allowing them entry to the room. Unique dialogue is also present while conversing with the sympathetic quartermaster.
 * A character with a low Intelligence is unable to gamble. When they observe a roulette table or a slot machine, the character will respond to it as a fun toy or an interactive character, respectively. Visiting a craps table will result in a Low-INT character to comment to the dealer that they "play craps in pants."