As a young child, Breault lived in the Boston and Cape Cod areas, but his family moved to Warwick, Rhode Island when he began grade school.
Breault developed an interest in science fiction and fantasy early in his childhood, and read The Hobbit at age eight.
As an associate instructor, Breault also taught astronomy courses on television that were broadcast to the regional campuses of Indiana University.
Initially continuing work with TSR, Breault gradually shifted over into computer and video games.
His freelance career spanned 10 years, from 1989 to 1998, living with his family (plus hypoallergenic dog Rags) in Warsaw, Indiana.
Breault lives in Kirkwood, Missouri and teaches game and narrative design at Webster University.
While working for TSR from 1985 to 1989 (and freelance from 1989 to 1995), he edited and developed over 90 books, modules, and boxed games, including items for the Dragonlance, Forgotten Realms, Greyhawk, Ravenloft, and Dark Sun settings, among others.
Breault, with Jim Ward, David Cook, and Steve Winter, co-designed the first Gold Box PC game Pool of Radiance.