The most popular Engine: SCUMM games
SCUMM (Script Creation Utility for Maniac Mansion) is a game engine and scripting language developed by Lucasfilm Games (now known as LucasArts) for creating graphic adventure games. It was first used in the game "Maniac Mansion" in 1987 and then went on to power many classic point-and-click adventure games during the late 1980s and early 1990s.
The SCUMM engine provided a way for game designers to create interactive and visually rich adventure games without needing to have an extensive background in programming. Instead of directly coding game logic, designers could use a set of commands and scripts to define characters' actions, interactions, and dialogue.
The SCUMM engine played a significant role in shaping the adventure game genre and influencing the way interactive storytelling in video games was approached. Over time, LucasArts transitioned to using newer engines for their games, and SCUMM became a historical artifact in the evolution of game development technology.