Castlevania 2 have really slow dialog and day night transiction, so i made this simple mod to speed them up.
The game is basically a collection of cryted roms, and this roms are loaded in the RAM of you pc at runtime, when executing the mod it search in you ram for the value that influence the speed in the game and change them.
That's all.

This mod started from this tweet of Foone, they discovered that when you start one of the games from the steam version, the clear rom get loaded in the ram, from there you can edit it and actually mod the game.
So after some testing and a looking to some existing rom hack of Simon's Quest, particulary Simon's Quest Redaction, i figured out wich bytes used to be the ones to control the dialog speed and day/night transiction and made a small program in c++ to change them.

I made this mod for my self, so don't know if it works well on other systems.

SOURCE CODE
https://github.com/MrSimsure/Castlevania-Simon-Quest-Fix

IMPORTANT
As the mod works on the game while in the ram, you have to execute the mod every time you start the game.

INSTRUCTIONS
- Open the game 
- Start Castlevania 2 
- Double click the executable
- Done

CUSTOM VALUE INSTRUCTION
- Open the game 
- Start Castlevania 2 
- Open the command prompt where the mod executable is located
- Write "Castlevania mod.exe -dia x -day y"
- Replace "x" whit the speed you want for dialogs (original : 5, defualt : 1) 
- Replace "y" whit the speed you want for day/night (original : 10, defualt : 3) 
- Press Enter