Castlevania: Dawn of Sorrow is an action role playing game for the Nintendo DS.
This game is the sequel to Castlevania: Aria of Sorrow.

Soma Cruz, being the rebirth of Dracula, has the power to capture souls and use them to fight monsters. After destroying Dracula's Castle in Aria of Sorrow, he returned to an uneventful life.
A year later, a cult leader named Celia Fortner appears, summoning monsters to attack Soma who then finds out that his power to capture souls hasn't faded. As Celia threatens to create a new Dark Lord, Soma and friends go to Celia's castle to thwart her plans.

This hack changes Julius to Yami Yugi From Yu-Gi-Oh. It also changes attacks, double jumps, and skills to summon monsters.
It also adds one music song.

Remember it's necessary to use Delta patcher to apply the patch.

Database match: Castlevania - Dawn of Sorrow (USA)
Database: No-Intro: DS (all) (v. 20210227-111036)
File/ROM SHA-1: 47530FF87E608F88105A314FDF36DC385F8DEC94
File/ROM CRC32: 135737F6

View in The Vault