Demon Castle Dracula is a fantastic PbtA homage to Castlevania and the action-gothic tradition it spawned from and connects to.
The PDF is 50 pages, with spectacular layout and illustrations. Everything is easy to read, immersive, and it looks good.
The only other PbtA game I know that goes this heavy into replicating Castlevania is Rhapsody Of Blood, so it's worth taking a moment to compare the two. Rhapsody is very much about being a generational game, and the big payoff to its mechanics happens every time you chance generations, whereas Demon Castle is centered on the events surrounding the PCs' attack on castle dracula.
DCD's gameplay is split between the past and the present, focusing both on the heroes in their assault on the castle and in the time leading up to their decision to join forces against Dracula.
Character creation-wise, there's a good spread of archetypes, backgrounds, and choices that let you customize your PC while still keeping them anchored to the touchstones of the genre.
Mechanics-wise, the normal PbtA mechanics are at play, making this a game that dynamically shifts and reacts around player choices and dice failures. However, you also have a lot of spendable currencies. Blood can be used for rerolls. Coin can be used to generate items. HP is used to absorb the consequences of bad rolls.
There's an overall Doom Clock timing the action of the game, and advancing the clock too quickly can trigger a hard to win variant of the final battle against Dracula. The players can also confront Dracula normally, if they can get to him without running down the clock.
Along the way to D, the players encounter bosses, which are essentially puzzle fights. Dice rolls are still required to bring a boss down, but it won't fall unless the players have also figured out and met its unique defeat condition.
For GM tools, there's a solid bestiary and rules on how to modify it, plus npcs, traps, a map, and a full and very thorough adventure. There's also equipment, pre-gen'd characters, and prompts for the players.
Overall, Demon Castle Dracula feels solid and well-made. If you want to play classic Castlevania as a loose, reactive, story-focused game, this is that and you should get it.
Minor Issues:
-Page 13, Love, "doyou" is missing a space