Controversies

Violence

 * KQ8 is often cited by many fans. But Sierra also points out violence in previous games as well.

King's Quest

 * KQ3 was very dark, and it utilized lots of magic and magic spells with the basic idea of finding ingredients for "black magic" spells and then casting those spells. (Certain religious groups were upset with me over that one!) -Roberta Williams, July 7, 1997.

King's Quest

 * http://www.playthepast.org/?p=4920
 * https://groups.google.com/forum/#!topic/comp.sys.ibm.pc.games.adventure/rCxMByHPrig

Sexist, Misogyny, Homophobia, etc

 * http://kingsquest.wikia.com/wiki/KQ4_development#Character