But did you know that there were sequels? To both the book and the film?
Racso and the Rats of NIMH
The sequel came out 17 years later and was written by the daughter of the original author after he'd passed away. While not bad, it's a pretty unremarkable children's book. Doesn't have the same charm as the original.
And there was another book after that which was more disappointing in its blandness.
But let's consider the movie...
(Nostalgia Critic reviews "The Secret of NIMH 2: Timmy to the Rescue")
Yes, the movie had a sequel. It came out 16 years after the original and had no involvement by Don Bluth, the original film's director. (Is this sounding like a familiar pattern?)
The movie was truly horrid. It featured a number of reasonable actors (Eric Idle? What the heck is he doing in there?) turning in uninspired performances. The animation is generic, the story is incoherent, and the ending is literally insane.
Here's a detailed synopsis and review if you want to save the 90 minutes of your life that would otherwise be wasted watching this animated travesty. If you're feeling like you must experience it first-hand, though, I suggest you skip to the last portion and watch Eric Idle's over the top performance.
Otherwise, check out the hilarious Nostalgia Critic review video and know you're not missing anything. :P