Monster Hunter · PlayStation 2
Monster Hunter Decompilation
mh1j is a decompilation of the initial Japanese release of Monster Hunter for the PlayStation 2. Per its readme, it is past 1% matched on the main executable, with all code including overlays at about 0.5%. It is In Progress, rebuilds the PS2 files rather than a PC port, and does not accept any code produced by AI or LLMs.
How to build it
- Copy SLPM_654.95 and AFS_DATA from your own disc into the repository's root folder.
- Install Python 3.9 or newer and the splat scripts for MIPS from the requirements file.
- Run make setup to extract files and install tooling, make split to deobfuscate the DNAS overlays and split the code, then make build to confirm a matching output.
Game version you need
- Japan · SLPM-65495
Hardware & system
No minimum stated in the README. Runs on: PS2 build (PCSX2 / hardware).
Versions, platforms & known issues
| Project | Type | Release | Status | Runs on | Game version | Last update |
|---|---|---|---|---|---|---|
| 2Tie/mh1jDecompilation of the initial Japanese release. Per its readme: past 1% of the main ELF, about 0.5% of all code including overlays. Accepts no AI-generated code. | Decompilation | No tagged release | In Progress | PS2 build (PCSX2 / hardware) | Japan · SLPM-65495 | Oct 14, 2026 |
Related links
About the game
Monster Hunter is an online action-hunting game by CAPCOM for the PlayStation 2 released on March 11th, 2004 in Japan, and September 21st, 2004 in North America. The game is a fantasy hunting simulator filled with many deadly monsters. Like actual hunting, successfully killing or capturing the monsters requires significant strategy, skill and involved resource management. While initially considered a commercial failure, Monster Hunter would go on to become one of CAPCOM's highest selling franchises. Despite featuring an offline mode, Monster Hunter was primarily an online game. The official servers were shut down on December 31, 2007 in North America and Europe, and July 1, 2011 in Japan. This means that it is now impossible to play online on official CAPCOM servers. Despite this, the game still features a small active community on private servers.
- Original platform
- PlayStation 2
- First released
- Mar 11, 2004
- Release · Europe
- May 27, 2005
- Release · Japan
- Mar 11, 2004
- Release · North America
- Sep 21, 2004
- Developer
- Capcom
- Series
- Monster Hunter
- Genre
- Role-playing (RPG), Strategy
- Themes
- Action, Fantasy, Survival
- Modes
- Single player, Multiplayer, Co-operative
- Perspective
- Third person
- Rating
- ESRB T
Story (via IGDB, in English)
The player assumes the role of a customizable self-insert hunter. They begin by entering the Village of Kokoto, which is a small hunting village lead by a Village Chief known as the Hero of Kokoto. The player grows in strength and skill by aiding the people of Kokoto Village, completing many different Quests in order to progress offline. This eventually culminates is a battle against the monster Monoblos, which is traditionally considered the offline final boss. In the online mode, the player travels to a town, which is not named in game, but is named in the Hunter's Encyclopedia lorebook as "Minegarde Town." In town, the player teams up with other hunters in order to grow stronger, only for the sudden appearance of the Giant Dragon "Lao-Shan Lung" to cause the town to fall into a panic. The player then teams up with hunters to slay or repel Lao-Shan Lung, so it does not destroy any villages in the West Schrade Kingdom. After doing so, the player unlocks a brand new tier of Quests, which would be known as "High Rank" in later Monster Hunter games, but is not named in the original. The player then meets what is known as the "Wyvern Blood's Call," and is met with the appearance of the Black Dragon "Fatalis," the online final boss. After slaying this evil dragon, the town and Kingdom is safe, and the player is regarded as a hero.
Screenshots
Trailer
More videos: Monster Hunter PS2 Trailer · Monster Hunter Intro PS2 HD
Game details, cover art and screenshots from IGDB via LizardByte GameDB, retrieved Oct 18, 2026. Images are © their respective owners.
About this project
Unfinished files are marked by matching folders under the nonmatching assembly directory, and the readme recommends decomp.me for working on individual functions. It also documents quirks of the Metrowerks compiler, such as reversing variable order relative to their final addresses. The project forbids agents from indexing or modifying its code. As of Oct 18, 2026, no Monster Hunter PC port meets Recompedia's inclusion rules.
FAQ
How far along is the Monster Hunter decompilation?
Per its readme, past 1% of the main executable, with all code including overlays at about 0.5%. It is an early-stage project.
Which Monster Hunter version does mh1j need?
The initial Japanese PS2 release. You copy SLPM_654.95 and AFS_DATA from your own disc.
Does Recompedia provide the game, ROM or BIOS?
No. Recompedia does not host or link to ROMs, ISOs, BIOS files or game assets. 2Tie/mh1j ships no game code or data either; it needs a disc image made from a copy of the game you own.
Recompedia does not host or link to ROMs, BIOS files or game assets. Every project listed requires a copy of the original game owned by the player. Status checked against the project's own repository on Oct 18, 2026.