Brian Moriarty built his first computer in the fifth grade. This early experience with digital electronics led him to persue a BA in English at Southeastern Massachusetts University, where he graduated in 1978.
His professional career began later that year, when he sold TRS-80 micros at a Radio Shack store in downtown Worcester, Massachusetts. After working for a few years as a technical writer at Bose Corporation, he became Technical Editor at ANALOG Computing, the first and largest magazine dedicated to Atari home computer systems. His first published games, Adventure in the 5th Dimension (1983) and Crash Dive! (1984), appeared in the pages of ANALOG.
In 1984 he joined legendary text adventure company Infocom, where he authored three award-winning interactive fiction titles, Wishbringer (1985), Trinity (1986) and Beyond Zork (1987). He also contributed (along with several other authors) to Douglas Adams' Bureaucracy (1987).
His first graphic adventure game, Loom, was published in 1990 by Lucasfilm Games to wide critical acclaim. He collaborated with Ron Cobb on the design of Loadstar: The Legend of Tully Bodine (Rocket Science, 1994), and is enigmatically credited with "Additional Additional Story" for Steven Spielberg's The Dig (LucasArts, 1995).
In 1995, he co-founded Mpath Interactive, a Web-based game-matching service that soon evolved into HearMe, the Internet's first voice chat system, with over ten million subscribers at peak.
He also served as Creative Director at Comverse, as a Producer/Instructor at the McAuliffe Challenger Center at Framingham State College, and designed numerous CD-ROM, console and downloadable titles as Creative Director at ImaginEngine.
In July 2009, he was appointed Professor of Practice in Game Design in the Interactive Media and Game Development program at Worcester Polytech, thus returning to the city where his career began. He is supposed to be completing an MEd in English at Framingham State University.