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System3 for Android

Download

You can download prebuilt APKs here.

Build

Prerequisites:

  • Android SDK >=28
  • Android NDK >=r15c

Using Android Studio

Clone this repository along with its submodules:

git clone --recurse-submodules https://github.com/kichikuou/system3-sdl2.git

Next, open the system3-sdl2/android directory as an Android Studio project.

Command Line Build

Set environment variables and run the gradlew script in this directory.

Example build instructions (for Debian bookworm):

# Install necessary packages
sudo apt install git wget unzip default-jdk-headless ninja-build

# Install Android SDK / NDK
export ANDROID_SDK_ROOT=$HOME/android-sdk
mkdir -p $ANDROID_SDK_ROOT/cmdline-tools
wget https://dl.google.com/android/repository/commandlinetools-linux-10406996_latest.zip
unzip commandlinetools-linux-10406996_latest.zip -d $ANDROID_SDK_ROOT/cmdline-tools
mv $ANDROID_SDK_ROOT/cmdline-tools/cmdline-tools $ANDROID_SDK_ROOT/cmdline-tools/tools
yes | $ANDROID_SDK_ROOT/cmdline-tools/tools/bin/sdkmanager --licenses
$ANDROID_SDK_ROOT/cmdline-tools/tools/bin/sdkmanager ndk-bundle 'cmake;3.22.1'
export ANDROID_NDK_HOME=$ANDROID_SDK_ROOT/ndk-bundle

# Clone and build system3-sdl2
git clone --recurse-submodules https://github.com/kichikuou/system3-sdl2.git
cd system3-sdl2/android
./gradlew build  # or ./gradlew installDebug if you have a connected device

Usage

Basic Usage

  1. Create a ZIP file containing all the game files and BGM files (see below for details), and transfer it to your device.
  2. Open the app. A list of installed games will be displayed. Since no games have been installed yet, only the "Install from ZIP" button will be visible. Tap it.
  3. Select the ZIP file you created in step 1.
  4. The game will start. To simulate a right-click, tap the black bars on either the left or right, or top or bottom of the screen.

Preparing a ZIP

  • Include all .DAT files.
  • Music files (.mp3, .ogg, or .wav) whose filenames end with a number are recognized as BGM files. For example:
    • Track2.mp3
    • 15.ogg
    • rance41_03.wav (Note: The filename shouldn't be rance4103.wav, as it would be treated as the 4103rd track.)

Note: This ZIP format is also compatible with Kichikuou on Web.

Miscellaneous

  • You can export or import save files via the game list's option menu.
  • To uninstall a game, long-tap its title in the game list.
  • A system menu will appear when you use a three-finger touch during gameplay.

Known Issues

  • Installing from a ZIP file containing multiple games (e.g., the DPS series) may not work correctly.