Open-source Android app that runs Digimon World 2003 through PCSX-ReARMed and shows a live Digivice-style companion on a second display (AYN Thor), a foldable hinge, or a split pane on tablets.

The source used to build v1.0.0 and later APKs is visible in this repository. CI clones this tree and runs scripts/build.sh.

The app does not include a ROM, BIOS or Flawe patch. You must supply your own legal copy.

Why this repo looks the way it does

Parts of the companion and the release automation were written with AI assistance.

Expectation	Here
Source browsable in Git	`dw2003-dual-screen/app`, `libretrodroid`, `cores/pcsx_rearmed`
License stated	LICENSE (GPL-3.0-or-later, required by LibretroDroid)
Upstream credited	NOTICE, `dw2003-dual-screen/THIRD_PARTY_NOTICES.md`
One build command	`scripts/build.sh` / `scripts/build.ps1`
CI matches local	`.github/workflows` only installs the SDK and calls that script
Signing is a secret, not source	Base64 in CI decodes the keystore from GitHub Secrets
History	`main` keeps the real commit history. POC tags `v0.7.x-poc` were retired after v1.0.0

Features

Dual-screen / fold / large-display layout with Explore, Battle and Management.
Live RAM read of Tamer, partners, story stage, equipment and an offline Flawe walkthrough (EN/ES/FR/DE/IT).
Flawe Fast Travel list of visited ASKMAP icons; signed in-app updates from GitHub Releases.
Optional quality-of-life cheats, crash log, bilingual companion panel.
Virtual pad, physical controllers, Memory Card import/export, optional European BIOS.
Optional Pocket Companion on a second Android handheld over the same Wi-Fi.

See dw2003-dual-screen/README.md for the detailed Spanish feature list and RAM caveats.

Building

See Building from source. A local debug build does not require the private release signing key.

Releases and verification

Official APKs are published at GitHub Releases. Each release includes the APK, SHA256SUMS.txt and CERT.txt (public signing certificate digests).

Package id: com.digitaladventure.dw2003. Uninstall any older com.digitaladventure.dw2003.debug POC before the first official install.

License and attribution

This combined work is distributed under the GNU General Public License, version 3 or later. See LICENSE and NOTICE.

Digimon and Digimon World belong to their respective owners. This unofficial fan project is not affiliated with Bandai Namco, AYN or Samsung.

Contributions and device reports are welcome. See CONTRIBUTING.md and SECURITY.md.

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