Script
Creation
Utility for
Maniac
Mansion.
It was a backend to many graphical adventure games that allowed environmental freedom. A system that didn't get bogged down in syntax or typos: "I cannot get the hamster" as so suffered in many text adventures.
It allowed multiple characters, event scripting, and kept track of objects no matter where you put them.
The creator of SCUMM, Ron Gilbert, left Lucasarts later to form Humongous Entertainment.