Groundwork for some of the best adventure games of the '80s/'90s.
The historical value of this game is huge: It was the very first of LucasArts' games to feature the SCUMM (Script Creation Utility For Maniac Mansion) engine, a groundbreaking platform that featured many classic adventure games over the course of the '80s and '90s (such as the Monkey Island series, Day Of The Tentacle and Sam & Max).
It's certainly interesting to play through this game in light of having played through the 'classic' SCUMM games: You can then see how the genre has evolved over time.
Some puzzles are quite a bit harder than those found in other LucasArts games; can be dull/frustrating if you get stuck. The interface isn't as intuitive as is found in later SCUMM games, so it can be confusing at times.
I expect that if you played this in 1987 you would really enjoy it and find the graphics and sound to be excellent. Nowadays, it just doesn't stand up to the later SCUMM games in terms of storyline, humor, graphics and just about everything else. I found it interesting to play, but not that much fun really.
The Bottom Line
If you're a fan of SCUMM games, then you need to play this game (make sure to play the enhanced version). If not, stick to the later SCUMM games to fully experience and appreciate the genius of LucasArts.