-DracXX's castle is based off of Cagliostro's Castle
-Lupin falls down a long false floor leading to an underground water tunnel filled with corpses, and even frogmen that come out like mermen
-Lupin and the count have their final stand on the hands of the clocktower, like CV4's mummy battle, and in LOD there's a puzzle involving the hands and using them as a platform, like in the film
-Clocktower with gears as obstacles
-Lupin detatches a gear, forcing it to fall out of place and go crashing down, like in CV4
-Not the castle, but the clocktower crashes down once the villain is defeated(tho the villains death isn't the reason for it crumbling), also causes the Acqueduct to crumble, reminds me of the bridge crumbling after beating the clocktower in CV3
-Ancient greek-like structures hidden away
-This ones definitely less likely, but Fujiko in this film reminds me of Yuko in Aria and Dawn, not just the blonde hair but also snoopong around and helping, but just me stretching it.
I guess CV would return the favor, as a Cagliostro game with a lot of similarities to CV came out on the MSX (stairs, hitting candles for items, similar enemies and enemy actions etc)