DQI-haX is a GitHub organization dedicated to preserving, understanding, and expanding the world of Dragon Quest IX for the Nintendo DS. From reverse engineering to data curation and in-browser tooling — we are building a complete open technical ecosystem for the game’s future.
Collapsus — A comprehensive Discord bot
- Full in-game database: recipes, quests, monsters, and grottos
- Random character generation
- Playback of the full soundtrack
- Regional term translation and cross-version lookup
- Continuously expanding dataset derived from in-game structures
editor — A cross-platform browser-based save editor
- Runs fully client-side with Progressive Web App support
- “Correct-by-default” editing model that prevents corruption
- Integrated labeled hex editor for advanced experimentation
auction — A custom DLC data generator
- Web-based interface for rapid item selection and configuration
- Produces fully customized item lists with any combination of items, amounts, and quantities
- Designed to generate downloadable content enabling acquisition of any in-game item
BattleEmulator — High-performance cross-platform battle emulator
- Executes ~13 million battle simulations per second
- Accurately reproduces behavior of a broad range of story bosses
- Written in C++ with native x86_64 and WebAssembly targets
- Runs cross-platform, including directly in the browser
ArchiveTool — A gp2 archive extractor and repacker
- Handles the game’s primary asset archives used across the ROM
- Enables file ripping and replacement for modification workflows
- Provides compression and decompression functionality for supported asset types
dqix-decomp — Ongoing decompilation
- Reconstructs DS binaries for study and modification
- Enables code documentation, symbol mapping, and restoration
- Status: early-stage research, not yet buildable
dqix-functions — Catalog of discovered functions from the Japanese version
- Structured for compatibility with
resymgen - Each entry includes address, name, and identified purpose
- Result of multi-year research effort
- Promotes reuse and cross-project consistency
desmume-scripts — Lua tooling for DeSmuME
- Display internal data such as RNG tables and memory values
- Automate repetitive inputs and testing sequences with macros
- Reproduce specific battle or map conditions for controlled experimentation
Save-Editor-Decomp — Decompilation of the original Windows save editor
- Decompiled for archival and technical analysis
- Preserves original logic and interface behavior
- Note: undocumented raw decompilation targeting .NET 8
