PSX · SCUS-94254 · 1998

Legend of Legaia, taken apart and running again.

A from-scratch Rust port of the 1998 PlayStation RPG that you can play in this tab, every model, texture, tune and cutscene on the disc laid open, a patcher that mods your own copy, and the documentation of how the game works underneath.

playable The whole game runs in the port, New Game to the credits: towns and dungeons, battles, menus, shops, saves, minigames, music and cutscenes. Where it stands has the measured detail and the known gaps.

Play in your browser Patch your disc Browse the assets Download for desktop Read the docs →
No Sony data shipped — bring your own disc image
Vahn walking through Rim Elm
Insert your disc image — pick your .bin once and every page on this site reads from it.Read locally, cached in this browser, shared across pages. Nothing is ever uploaded. No image yet? Make one from your disc.

Where it stands

the port, measured
  • works
    Towns, dungeons and the world mapWalk, talk, open chests, ride the story scripts from a New Game to the credits. The same scene scripts the original runs, interpreted by the port.
  • works
    BattlesRandom and boss encounters, Tactical Arts, Seru magic and summons, items, spoils and level-ups.
  • works
    Menus, shops, inns and savesThe pause menu, equipment, shops and inns, and saving and loading - including real memory-card saves.
  • works
    MinigamesFishing, the slot machine, Baka Fighter, Noa's dance and the Muscle Dome, each on its own page too, beside the port's own custom game modes.
  • works
    Music, sound and cutscenesSequenced music and sound effects through a recreated sound chip, voice streams, and the full-motion videos.
  • known gaps
    Still being polishedExpect the occasional bug, and some scenes and effects do not yet match the original frame for frame. The numbers below are measured against the retail game, not estimated.

Beyond the original: enhanced lighting with a time-of-day mood, see-through walls around the player, ambient occlusion and a photosensitivity guard on the flashing palettes are on by default; bloom, volumetric ground fog, free-angle movement and VR are a toggle away, and so is the retail look (every knob). For a playthrough on real hardware or an emulator, the ROM patcher's mods apply to your own disc.

How far it plays
35/35
story milestones, New Game to the credits in one unbroken run on pad input
99.3%
mean frame match against retail, across 700+ captured states (747 with a scored frame)
How much is traced and ported
How these are measured →
How much is checked against retail's own code
100.0%
of ported routines run off the disc beside their Rust kernel (1053 of 1053)
1071
retail routines executed in an R3000 interpreter, by 804 tests that prove which bytes they ran
The verification ladder →

Port status by code image

16 of 19 game images complete

The game's logic ships as one executable plus overlays the disc swaps in per mode. Each card counts the functions the disc places in that image: ported to Rust, covered natively by the engine (PsyQ libraries, BIOS, GPU and CD plumbing, data-driven layers), no retail behaviour to carry (unreferenced, dev-only or empty), and the empty remainder of the bar is what is still open. Code identified is the share of the image's code bytes inside an identified function, so a 100% never hides code nobody has looked at.

Developer and unused images (6)
How this is measured →

Play

the engine, in this tab
Vahn walking through Rim Elm past the Genesis Tree
A battle: the Seru Gimard casting Burning Attack
The Sebucus Islands world map under drifting mist

Play the port

New Game to wherever you get: the from-scratch engine running the real game, flat or in VR, with saves kept in your browser.
Noa's dance minigame on the Sol Tower dance floor
The Wild Card slot machine
Fishing: Vahn casting with the power meter up

Minigames & Sol Tower

Slots, Noa's dance, Baka Fighter, the Muscle Dome, fishing — playable with retail data.
Texas Hold'em at the Mist Lantern Table: islanders seated around the felt with cards and chips
Drake Dash: racers at the start gate on the overworld, counting down
The Grid Duel card game on its table, a hand of cards in front

Custom game modes

The port's own games, from the experimental expansion pack: Hold'em, the Grid Duel card game, mini-golf and racing, played in 3D from your disc.

Mod your disc

patched locally, nothing uploaded
Randomizer options: drops, chests, and shops set to shuffle or randomize

ROM patcher and randomizer

Shuffle drops, encounters, chests, shops, doors and arts combos, tune the difficulty, fix an original softlock, or add code-injected extras like the in-shop Seru-trading vendor. You get a patched image and a shareable patch file that plays on an emulator or a console.

Translation workbench

Export the game's text to an editable pack, translate it, and import it back onto your disc.

Open the workbench →

Expansion workbench

Build an expansion pack for the port: new bosses, quests, cards, modes and tile-painted maps, checked against your disc.

Open the workbench →

Modding and translation guide

Every mod family, hand-editing a monster, swapping a texture, and building a language pack.

Read the guide →

Explore the game data

decoded from your disc
Geremi's windmill on its hilltop, from the 3D model browser

Asset viewer

Every 3D mesh and texture on the disc, grouped by scene.
The sound-test track list with play controls

Media browser

All the music, sound banks, FMVs, and voice audio.
Vidna assembled in 3D

Game world

Every town and dungeon assembled in 3D, with enemy rosters.
A kingdom's overworld rendered in WebGL

World overview

Each kingdom's overworld in real-time WebGL.
The disc's sectors as nested boxes coloured by format

Disc map

Every sector of the disc as nested boxes: files, PROT entries, formats.
Noa's field model

Characters

Vahn, Noa, and Gala — dress the battle model, play every action and Tactical Art.
Mei, a Rim Elm villager

NPCs

Every townsperson in 3D, posed straight from your disc.
Lu Delilas's battle model

Enemy table

Stats, drops, steals — click a row to spin the 3D model.
A vendor's priced inventory

Shops & vendors

Every shop's priced inventory, town by town.
Vahn in his battle stance, facing the camera

Tactical Arts

Inputs, AP costs — each art performed by the battle model.
Meta, the Ra-Seru summon, mid-cast

Seru Magic & Summons

Every cast animated, and the seven Ra-Seru bodies in 3D.
Legaia Explorer showing Gimard Lv3's textured battle model beside the monster list

Desktop Apps

Legaia Explorer and the native port, in every release archive: browse and export your disc, or play it.

Stories from the dig

write-ups
6-part series

Patching a sealed disc

Modding a retail CD with no source and no SDK — a six-tier ladder from byte edits to hand-assembled MIPS hosted in an overlay's dead space.

 write-up

The endless orbit

A softlock as old as the game: why the Gaza rematch can stall forever after Kemaro, and the nine-word fix.

 write-up

The Spirit fish gate

The fish that couldn't be caught — tracing a minigame gate nobody understood.

Read how it works

docs zone

The project runs on two tracks that feed each other. Preservation gets every asset off the disc and writes down each file format, with every claim traced back to the game's own code. Reimplementation is a from-scratch rewrite of the engine in Rust, built from those documents rather than from Sony's executable - so it can run the game faithfully and also go beyond it (dynamic lighting, see-through walls, VR) with the retail look one toggle away. The docs below are the shared ground truth for both.

Start here: how the game is put together

The layer diagram from raw sectors to runtime VMs — disc → ISO9660 → PROT.DAT → containers → formats → engine.

Architecture →

Subsystems

How the running game works: boot, the script engines, rendering, sound, battle, the world map, menus, shops, inns, level-ups and the minigames.

Subsystems →

Formats

Byte-level specs for everything on the disc — each traced to the game code that reads it, with a confidence badge.

Formats →

Guides, tooling & reference

Build the workspace, extract assets, mod and translate. Reference — RAM map, function directory, game-data tables.

Guides →
Also Quick start (native tools) Open questions Settled questions Source on GitHub