Shmoop & Sk1b / PC Engine — third-party components

EmulatorJS 4.2.3 (unmodified minified distribution)
https://github.com/EmulatorJS/EmulatorJS/tree/v4.2.3
GPL-3.0 — full license: vendor/LICENSE.EmulatorJS in the web package.
Source archive: https://github.com/EmulatorJS/EmulatorJS/archive/refs/tags/v4.2.3.zip
Runtime files acquired from https://cdn.emulatorjs.org/4.2.3/data/

Mednafen / Beetle PC Engine libretro core, legacy WebAssembly build from
@kreijstal/emulatorjs 4.2.3-build.1. Core metadata and license are preserved in
vendor/core-info/. GPL-2.0 license text: vendor/core-info/license.txt.
Core source: https://github.com/EmulatorJS/beetle-pce-libretro/tree/e1ac90d5a97ad328c51b8b01e68da8af5faa1579
Build environment: https://github.com/EmulatorJS/build
RetroArch: https://github.com/EmulatorJS/RetroArch
The publisher identifies the core, RetroArch and build-script revisions and
patches for this separate replacement build. Source snapshots, build scripts,
patches and the source-built 7z helper: /sources/emulatorjs-sources-4.2.3-build1.zip

EmulatorJS bundles additional open-source components, including the 7z
decompressor, nipplejs and socket.io. Consult upstream sources and licenses.
All vendor files retain their upstream copyrights and licensing terms.

web/engine-adapter.js documents integration overrides for memory-only emulator
filesystems, wrapper-owned input and optional browser storage, and no update
checks or wake-lock requirement. Runtime vendor files are otherwise unmodified.
The site adapter also adds the pacing hook to the decompressed Emscripten 6
JavaScript at load time; its complete readable transformation and speed control
are in /play/yarn-patrol/engine-adapter.js, audio-playback.js and core.js.
It also gates native frames at 60 Hz without audio synchronization so the story
can run before a movement gesture unlocks browser sound. web/canvas-video.js
presents the software-rendered PCE framebuffer with Canvas2D when WebGL is
unavailable; the ROM and native WebAssembly emulation remain identical.
The web package includes readable wrapper JavaScript, HTML and CSS.
The original game is an independent native PC Engine / TurboGrafx-16 HuCard
program. No BIOS, commercial game data, or console firmware is bundled.

Native music: Burgmueller's Op. 100 Nos. 1, 9 and 15, plus five written
arcade arrangements using No. 15's bass motif and chord-stab groove, plus the
darker NG+ variation The Black Undertow of the slipstream travel theme.
Composer Johann Friedrich Franz Burgmueller (1806-1874).
Mutopia public-domain editions/typesetting by Bas Wassink (2013-01-12),
from the nineteenth-century Collection Litolff. Both composition and these
contributed editions are public domain. Each source explicitly declares this.
Source PDFs, LilyPond, MIDI notation and permission metadata are preserved in
assets/audio-source/ in the game source project; no commercial recording is used.
The introduction, Neptune, Haze and Lava Tiger have new melodies, forms and
harmonic routes built around the Morrdor/Ballade reference. Morrdor, the first
two bosses and victory retain their public-domain score adaptations.
Former No. 3/10 sources remain archived, but their tracks are no longer used.
See MUSIC-CREDITS.txt in the browser package for exact source links.
https://www.mutopiaproject.org/legal.html