If you loved The Castle of Cagliostro, try Lupin the Third: The Mystery of Mamo
A bridge between a film you've already seen and one most people haven't. Lupin the Third: The Mystery of Mamo has roughly 10.0× fewer votes than The Castle of Cagliostro — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theyboth carry the playful mood tag, and they sit in Adventure / Animation / Comedy / Crime territory. If that's the register that drew you to The Castle of Cagliostro, the second film will land in a comparable space — through a different lens.
What Lupin the Third: The Mystery of Mamo is
The first Lupin film wanted to be many things at once. Our thief investigates a murderous immortal, whose ambitions threaten the world. It turns out the the film bit off more than it could chew, really.

