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Game Setup

You must obtain clean, unmodified and complete data to proceed with our guides

Corrupted or incomplete files will cause unpredictable issues we can't cover.
TWO-TORIAL does not provide or distribute game data. Do not ask.

If you're coming from a previous version of the game

You'll want to create a new folder for the game and start from scratch.
SEGA games DO NOT like being extracted over old data!

Preparing data

Game data cannot run on E:\ or Y:\ drives, use a different drive letter

Ensure your game files are not marked as read-only:

  • Right click the directory containing your files
  • Click on Properties
  • Under the General tab, find Attributes and uncheck Read-only
  • Click Apply
  • When prompted, select Apply changes to this folder, subfolders and files
  • Click OK to confirm, then OK again to close Properties

Here's what the expected original data structure should look like:

📂amfs
📂App
📂Option

Create another empty folder named AppData next to them:

📂amfs
📂App
📂AppData
📂Option

The App folder should have a file structure as follows:

📂bin
📂data
📂firm
📂startup
📄firewall.cfg
▶️game.bat
▶️oxGetHwInfo.exe
📝oxGetHwInfo.ini

If your data doesn't look like this

If your data looks like the third example:

  • Create an App folder and move all files and folders from the image inside of it
  • Create empty folders named amfs, Option and AppData next to the App folder

If extra directories or files are still present (executables, scripts, etc.), remove them.

This also indicates tampered data, we strongly recommend obtaining clean data from elsewhere.

Updating data

Extract your patch's files to your existing data in a way that matches its file structure.
Agree to overwrite files if necessary.

Installing option data

SEGA games receive content updates through option folders rather than direct game file updates.

For CHUNITHM, official options are named A???, where ??? represents a sequence of numbers.
Community-created options often use letters instead of numbers to differentiate them from official releases.

After downloading option files, extract them into your game's Option folder.

📂amfs
📂App
📂AppData
📂Option
┣━📂A001
┣━📂A121
┣━📂A131
┗━ etc.

Option numbers don't always follow a sequential pattern
It's common to see the numbers jump, for example A113 then A121

The A001 option folder may be required for network connectivity

Installing unprotected executables

CHUNITHM executables are protected and will not run on a regular computer.

Obtain unprotected (also called "unpacked" or "decrypted" by the community) copies of chuniApp.exe and aimeReaderHost.exe for your game version.

  • Copy chuniApp.exe and aimeReaderHost.exe to data's App\bin folder
  • Agree to overwrite when asked

Installing ICFs

Install Configuration Files (ICFs) tell the game what version it is. Without this your game cannot go online!

If your unprotected executables came with an amfs folder, and already has a file named ICF1 in it, skip this step.

Otherwise, obtain copies of ICF1 for your game version and place it in the amfs folder. If it is named something else, rename it to exactly ICF1 without any file extensions.

Showing file extensions

By default, file extensions on Windows are hidden. Enable them by navigating to the View tab in File Explorer and select File name extensions.

Patching the game

Go through the Web Patching guide to learn how to use a web patcher

Avoid patching anything you don't need or understand unless explicitly told to

Patch Recommendation Description
Disable shop close lockout Either Disables the shop lockout from 12 to 8PM JST.
Force shared audio mode Either Force the game to use shared mode audio output, letting you listen to other audio sources while the game is running at the cost of audio latency.
Force 2 channel audio output Either Try enabling this patch if you don't get audio output at all.
Disable song select timer Either Disables the song select timer.
No encryption ON Disable encrypting network requests. Required if you plan to run a local server.
No TLS ON Disable checking if the server is HTTPS or not. Required if you plan to run a local server.

Installing segatools

If you already have segatools installed, ensure you're using the latest version

  • Head over to segatools releases
  • Download segatools.zip
  • Extract the archive
  • Find chuni.zip and extract it to your data's App\bin folder

You should now have these files added to your App\bin directory:

📂DEVICE
⚙️chunihook.dll
▶️inject.exe
📝segatools.ini
▶️launch.bat

Configuring segatools

You'll need to manually edit App\bin\segatools.ini as segatools has no graphical configuration tool.

We recommend using a text editor with syntax highlighting such as Notepad++.

The following sections match those found in segatools.ini - skip any sections not listed below.

If a key already exists in a section, simply change its value after =, do not add another key.

[system]
dipsw1=1
dipsw1=1 ; WRONG!
Relative Paths

Relative paths make your configuration portable and easier to maintain.

Say your game folder structure looks like this:

📂Game Folder
┣━📂App
┃ ┗━📝segatools.ini
┗━📂Option

If segatools.ini needs to access the Option folder, you can use ../../Option/:

  • ../ moves up from bin to App
  • ../ moves up again from App to the root Game Folder
  • Then it can access the Option folder

If you've followed our recommended file structure, use these values:

[vfs]
amfs=../../amfs
option=../../Option
appdata=../../AppData

If not, point those to their respective folders.

Display settings

  • Use windowed=0 for fullscreen mode or windowed=1 for windowed mode
  • For multi-monitor setups in fullscreen mode, specify your target display using the monitor index setting
Finding your monitor index

Open Windows display settings to find your monitor numbers.
Your monitor's index is one less than the displayed number.
For example, if Windows shows "Display 2", use monitor index 1.

Configuring audio

  • Open sound settings
    • On Windows 10: Right-click on the volume icon in your taskbar and select Sounds
    • On Windows 11: Right-click on the volume icon in your taskbar and select Sound settings then scroll down and click on More sound settings
  • Navigate to the Playback tab, right click on your default audio device, and click on Properties
  • Go to the Advanced tab
  • Check both boxes under Exclusive Mode
  • Open the Default Format dropdown
  • Pick either 16 bit, 48000Hz (DVD Quality) or 24 bit, 48000Hz (Studio Quality), click Apply, then OK

Connecting to a network

Pick one or the other, not both!

Option 1: Remote (Online Network)
  • Head to the [dns] section inside segatools.ini
  • Set default to the address provided by your network
    Do not add http:// or https:// to the address!
[dns]
default=network.example
  • Then, head to the [keychip] section and add & set id to the keychip ID provided by your network
    Do not change the subnet from its default unless told to by your network!
[keychip]
subnet=192.168.XXX.XXX
id=A69E-XXXXXXXXXXX
  • Create a file named aime.txt inside App\bin\DEVICE and type in a 20-digit access code
    If you don't already have one, simply make one up, just know it must not start with the number 3!
📄aime.txt
    01234567890123456789
Option 2: Local (ARTEMiS)

Refer to the official guide for ARTEMiS to set up a local server.

Installing VCRedist & DirectX

Download and install:

Before playing

A few things to remember before each play session

  • Close of any applications running in the background which could affect performance
  • Double-check your monitor is oriented properly for this game
  • Double-check your sample rate is correct for this game
  • Connect your controller

First launch

Without an English patch, the service menu will be in Japanese.
If you don't know Japanese, Google Lens is a handy tool for navigating this menu.

If you've followed all instructions correctly, you're now finally ready to launch the game!

Start the game by running App\bin\launch.bat. Let the game load until it reaches the screen below.

Press your Test button (default F1) to enter the service menu. Use the Service button (default F2) to navigate the menu, and Test button to select an option.

Navigate to ゲーム設定 (GAME ASSIGNMENTS, the fourth option).

Select 配信サーバー設定 (DISTRIBUTION SEVER SETTING, the first option) and toggle this setting to サーバー (SERVER).

Select 筐体グループ設定 (CABINET GROUP SETTINGS, the second option) and toggle this setting to OFF.

Select 終了 (EXIT, the last option) to exit to the main service menu.

Select はい (YES) and select 閉じる

After this, your game will close. Open it back up, and enter the service menu again.

Navigate to 閉店設定 (CLOSE SETTING, the tenth option).

Navigate to 時 (HOUR, the second option) and use the Service button to toggle the setting until it says 全時刻 (ALL TIME).

Select 終了 (EXIT, the last option) to exit to the main service menu, then select 終了 (also the last option) in the main menu to exit the service menu.

If you're stuck at the Waiting for Distribution Server screen below, close the game and relaunch.

You're all done! The game should load up properly now

You can add coins using the Coin key (default F3) and card in by holding the Enter key

Help

Something's wrong?

Make sure you've followed all steps correctly and also read other relevant guides.

Still stuck? You can join our Discord community server for support!
Click on the Discord logo at the bottom right of the page.