Intelligence

Version 0.30: This article may not be up to date for the latest stable release of Crawl.

Intelligence (or INT) is one of a character's three main attributes, along with strength and dexterity. Characters who plan on using any of the various schools of magic will benefit greatly from having a high intelligence score.

Intelligence affects the following:

• Reduces chance of spell failure.
• Increases spell power.

If your intelligence is ever reduced to 0 or lower, you will suffer stat zero effects.

Useful Info

In general, the power boost is more impactful than the spell failure boost:

• Spell failure: Intelligence reduces failure. This is done at a rate of 6 intelligence : 1 skill in every spell school except Spellcasting.
• Spell power: Before modifiers, intelligence is a INT / 10 multiplier, so 20 intelligence is up to twice as much power as 10 intelligence. However, there is a logarithmic stepdown if power > 50, so going from 10 to 20 is usually less than twice the power in practice.

History

• Prior to 0.26, Intelligence reduced spell hunger per casting by INT × Spellcasting.