At one point in her youth, Briggs was a babysitter of Ron Gilbert, who went on to design the pirate-themed adventure game Monkey Island.
Working long hours playtesting games and learning the ZIL programming language, she quickly rose to the rank of implementor.
She explained these choices by saying, "C. S. Lewis said he had to write The Chronicles of Narnia because they were books he wanted to read, and nobody else had written them yet.
"[5] Although Plundered Hearts was her only published text adventure, Briggs worked as a writer and editor on a number of other Infocom projects: she did a major rewrite of Quarterstaff, and helped to design "The Flathead Calendar", the main feelie included with Zork Zero.
She was also briefly lead implementor on Milliways, the never-completed sequel to The Hitchhiker's Guide to the Galaxy.