sylph-decoder 3a87a26235 game: fill in the player's-eye navigation map from the committed oracle frames
Sections 1 to 3 were almost entirely open questions. Everything a capture in
docs/re/captures/ actually shows is now written down from the chair: what is on
each screen, what the cursor does, and what each footer offers.

Boot: the publisher plate is SQUARE ENIX, the developer plate is GAME ARTS /
SETA / studio anima, both still pictures the game draws rather than video, then
the cinematic -- one A skips it, 57 s to the title against 193 s without.

Main menu: the five labels and where each goes, the wrap rule, and the caveat
that initial focus varied across four boots. Carries the footer warning from the
measurement in the same push.

Submenus: NEW GAME's DIFFICULTY and SELECT DATA; LOAD GAME's slot carousel,
Details panel and its five-button footer; the six tutorial lessons in two
groups; OPTIONS' four categories; EXTRAS' three items; and MISSION SELECT with
the locked-list explanation for the cursor that would not move.

What stays open is marked open, and it is now the residue no capture answers
rather than the residue nobody looked at.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013UxPvE5cz7zekXBKi7Xw2r
2026-08-29 10:43:12 +00:00

Sylpheed

A clean-room reverse engineering and port project for Project Sylpheed: Arc of Deception (Xbox 360, 2007).

Three things live here, in one repository so that a change spanning them lands as one commit:

The decoders crates/sylpheed-formats — the disc's formats, read and verified disc-wide
The port port/ — a Godot 4 project, plus crates/sylpheed-export which converts a disc into the open asset tree it reads
The corpus docs/re/ — what has been reverse engineered, with its evidence, its retractions and its dead ends

You need your own copy of the game. No game content is in this repository and none ever will be. The exporter reads the disc you supply.

The oracle is the real game

sylpheed-cli and the Explorer are tools for verifying our decoding. They are hypotheses under test and they have been wrong. When something must be checked against the truth, the truth is the game running in Xenia Canary, captured — not any renderer of ours.

This is stated first because getting it backwards is the most expensive mistake this project has made.

Layout

crates/
  sylpheed-formats/   the decoders. Disc-wide verified; the corpus is its spec
  sylpheed-cli/       headless tools -- render a screen, dump a table, probe audio
  sylpheed-viewer/    the Explorer: a human's window onto the disc. STATIC data only
  sylpheed-export/    disc -> the open, moddable asset tree
port/                 the Godot 4 project. Reads open formats ONLY
authored/             decisions that are NOT on the disc, each with its reason
data/
  base/               generated by the exporter. Gitignored, never hand-edited
  mods/               drop-in overrides. Yours
docs/
  re/                 the corpus: findings, refutations, method traps
  game/               how the game is navigated -- menus, modals, flight
  port/               the port's mission, its handoff contract, modding rules
  agents/             how the agent team works together
tools/                capture harnesses, probes, the share tool
exchange/             transient inter-agent files. NOT in git
docker/               the agent containers

Where to start

Xenia Canary is a separate repository: it is a fork tracking upstream, and it carries our instrumentation.

Conventions

Confidence is per claim, never per document: CONFIRMED · 🟡 PROBABLE · HYPOTHESIS · REFUTED. A withdrawn result is kept with its reasoning rather than deleted — that is why the numbers here can be trusted.

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