You can use any or all of the patches below in your speedruns. You can apply them using any hex editor (e.g., [HxD](https://mh-nexus.de/en/hxd/)), or you can use [this tool](https://github.com/periwinkle9/CSSpeedrunPatcher) that I made instead if you aren't comfortable with that.

All values are in hexadecimal. The original values are given for reference so you can double-check that you're modifying the correct offsets.

# Keep the game running when not in focus:

```
0x13593: 75 -> 71
0x12BC0: 55 -> C3
0x12BF0: 55 -> C3
```

# Make the game window bigger:

This changes the 320x240 windowed mode by multiplying these dimensions by a scale factor. To use this, apply the patch for the scale factor you want and then set the display mode to 320x240 windowed mode in DoConfig.  
Note, using this patch may incur a small performance penalty—initial tests indicate that a full Best Ending run may be a few seconds slower with the patch, depending on your computer.

Here is a patch for a 3x size multiplier (960x720):
```
0xB4A6: 01 -> 03
0xCD6B: 1E -> 10
0xCD7C: C7 45 F8 14 ... -> 6B C8 0A 89 4D F8 6B D0 05 89 55 FC 90 90
0x127C2: 40 01 -> C0 03
0x127CC: F0 00 -> D0 02
```
This patch scales the window by 4x (1280x960):
```
0xB4A6: 01 -> 04
0xCD6B: 1E -> 10
0xCD7C: C7 45 F8 14 ... -> 6B C8 0A 89 4D F8 6B D0 05 89 55 FC 90 90
0x127C2: 40 01 -> 00 05
0x127CC: F0 00 -> C0 03
```
Even higher scale factors are also possible; see [this](https://github.com/periwinkle9/CSSpeedrunPatcher/blob/main/README.md) for details.

# Automatically advance text when holding Z or X:

**Note: If you plan to submit a run using auto text advance, then you must use this patch to do it. Other methods that achieve a similar effect (e.g., turbo buttons) are not allowed.**
```
0x16CA0: 55 8B EC 0F B6 05 ... -> B8 09 5B 4A 00 FE 00 82 38 02 7E 0A C6 05 DC 5A 4A 00 01 C6 00 00 C3
0x25584: 14 -> 10
0x2558A: C6 05 DC 5A 4A 00 01 -> E8 11 17 FF FF 90 90
```

Allowed quality-of-life speedrun patches

application that makes it possible to run non-Unicode applications in a locale of the user's choice

AppLocale

Includes some options to choose which points to split at

Autosplitter

You can find all the saves in the "Practice saves" folder, you need to rename the save as "Profile.dat" and place it in the Cave Story directory.

Cave Story - Practice saves

If your game has black boxes around all of the sprites, try downloading this to fix it. (If you find that the game is lagging with this installed, try downloading the 0.5.1 release instead of the latest one.)

DDrawCompat (transparency fix)

GRebind

JoyToKey enables PC game controllers to emulate  keyboard input

JoyToKey

Like AppLocale except it works on newer Windows systems. (Use for making Japanese text display properly)

Locale Emulator

Pixel discord

Practice hack

Once you run the application, press the "Update exe Directory" button and find your Doukutsu.exe location. You may then edit and save from Preset or Custom profiles.

Save Editor and Manager

Save manager

a save manager that allows you to back up your current save with a custom name and load saves from a list of previously backed up saves

**(needs net 7.0 runtime)**





### Usage:

place the exe in the same directory your game is.  it will create a "save" folder which it will use to store backed up saves

- back up your current save by writing a name into the input box (dont type the file extension there) and hit "save as".  the save will be added to the list under the name you set it as.
- load a save by clicking it on the list and hitting the "load" button under the list
- delete a save by selecting it, then right click it and select "delete"
- you can also rename a save by choosing "rename" under the "delete" option

![](/static/blob/rz2dvkn0.png)

SioN's Save Manager

Replaces the FPS display with the player's x speed (absolute value). See readme.txt for instructions. Credits to txin for the hack

Speed display hack

draculantern

magmapeach

Shadax

SioN

periwinkle

Jordan_Times

Microsoft

Cave Story

ugyuu

Katie4

phlenge

AzuFPS

JPN / NTSC

Must apply the patch at https://www.speedrun.com/cave_story/resources/ai8cl if you want to use Auto Text Advance.

Auto Text Advance

Hi all, we've decided to implement a few new rule changes. Refer to the updated [Game Rules](https://www.speedrun.com/cave_story?h=Best_Ending&rules=game&x=ndxm452q) for full details.

# Quality of life patches

We are allowing the use of a select number of quality-of-life patches:

- A patch to kee

Namn	Manager
AppLocale av Microsoft	Raderad 21 years ago
Autosplitter av magmapeach	magmapeach 6 years ago
DDrawCompat (transparency fix)	periwinkle 6 months ago
GRebind	Raderad never
JoyToKey av jtksoft	Raderad never
Locale Emulator	periwinkle 1 year ago
Pixel discord	draculantern 8 years ago
Practice hack	Raderad never
Save Editor and Manager av Jordan_Times	Jordan_Times 5 months ago
Save manager av Shadax	Raderad 7 years ago
SioN's Save Manager av SioN	SioN 1 year ago
Speed display hack av periwinkle	periwinkle 4 years ago