Intelligence (abbreviated as "IN") is a measure of a character's smarts. It impacts a character's ability to learn several skills. It's also the limiting factor in a character's ability to learn and sustain spells, as well as their ability to master Technological Disciplines.
A character's verbal acuity is based primarily on his or her intelligence. A person of low intelligence has distinctly limited choices in dialog. These dialog limitations make certain quests unattainable.
Consuming alcoholic beverages can temporarily depress the intelligence stat.
Intelligence influences a few secondary stats:
- Spell maintenance: an intelligent wizard can keep control of several spells at a time; the maximum number of spells one can maintain simultaneously is that character's IN divided by four (the result is not rounded upward – with 11 IN, only two spells can be maintained at a time; a full 12 is needed to sustain three).
- Dialog: a character with IN below 5 will not be able to speak properly, which can make dialog pretty humorous. IN 5 is the minimum required to learn spells.
- As an exception, a character with the "Idiot Savant" character background can have higher intelligence while still communicating unintelligibly.
IN can easily be boosted by 10 by using an Essence of Intellect.
The Ring of Dark Magicks increases IN by 1.
The Vivifier permanently increases IN by 1..
Therefore, a magical character can achieve 20 Intelligence without spending a character point on it, as long as the race and the background are not reducing Intelligence below 8.
A technological character that invests into Therapeutics can additionally temporarily boost IN by using the Mind Marvel and Revitalizer. Utilizing the Essence of Intellect and the Brain Builder schematic, even a character with 5 IN can become fully proficient in any technological discipline.