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Recent Updates

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  • Utilities
    Due to the fact that CajeASM hasn't been updated by me for many years, still has some odd bugs regarding instruction counter and due to the fact that (nowadays) better alternatives exist now, I've decided to delete this tool from this website. An alternative assembler I can recommend is bass, currently maintained by ARM9. To be found here:
  • Reviews
    Upon further play, I discovered this hack broke an integral system to the game (the dash function).
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    Source code link added.
  • Translations
    Source code link added.

Castlevania - Circle of The Realm

Hack of Castlevania: Portrait of Ruin


Castlevania - Circle of The Realm is a simple yet complex mod/ROM Hack for Castlevania - Portrait of Ruin. Takes 7 years after the event of Castlevania - Circle of The Moon and as a Fan prequel to Castlevania 64. Arm yourself, storm into the deep dark castle, and be ready to send the dark legend back to its realm.


  • Custom player
  • Custom stage
  • Custom Enemy
  • Custom Animation
  • Custom Music and Sfx
  • And more!


  • Version BETA 0.0.1

Played privately by JupiterClimb

  • Version OFFICIAL 1.0.0 (06/07/2022)

Major release.

FERNANDEZ’S mode isn’t ready yet

There’s a custom NPC in this game that doesn’t have an official Ayami Kojima art, so apology for the weird anime portrait.

Check the Readme file and the “Quality of Life Tips” file for more accessible gameplay. Otherwise, enjoy the game! Feedback for future updates is greatly appreciated!

Big Credits: Drameloch, Serio, Cyber Dragon10k, and Donoforio.

ROM / ISO Information:

  • Database match: Castlevania - Portrait of Ruin (USA)
  • Database: No-Intro: DS (all) (v. 20210227-111036)
  • File/ROM SHA-1: 382602E3615B2282EEAD584014125E71B5B0F033
  • File/ROM CRC32: 96DF4C4D




ContributorType of contributionListed credit
Masked DededeHackingHacking, Story Revision, Beta Tester
OerstedHackingBeta Tester
Dev AnjHackingHelped with ASM
LagoLunaticOriginal WorkMadlad who created DSVedit
Fat T-800 Albert "Edvard"Original WorkCreator of Rondo of Ruin + Inspiration

User Review Information