THIRD-PARTY SOFTWARE IN THIS DIRECTORY
======================================

The arcade cabinet in the Chiisai Games 3D room emulates a DOS PC in the
browser. The emulator in this directory is free software, redistributed here
under the GNU General Public License, version 2 - the full text is in
LICENSE-GPL-2.0.txt beside this file. Under that licence the corresponding
source code is available from the projects below. Every file is the project's
published build, unchanged, EXCEPT emulators/emulators.js - see the
MODIFICATION notice under "emulators" below.


js-dos 8.4.1
------------
Copyright (c) Alexander Guryanov (caiiiycuk) and the js-dos contributors
Licence: GPL-2.0 (as declared by the js-dos@8.4.1 npm package)
Home:    https://js-dos.com/
Source:  https://github.com/caiiiycuk/js-dos
Files:   js-dos.js (the player library; its stylesheet js-dos.css is not
         vendored - nothing on this site loads it)


emulators (the js-dos DOSBox build)
-----------------------------------
Copyright (c) Alexander Guryanov (caiiiycuk) and contributors
Licence: GPL-2.0
Source:  https://github.com/js-dos/emulators
Files:   emulators/emulators.js, emulators/wdosbox.js, emulators/wdosbox.wasm,
         emulators/wlibzip.js, emulators/wlibzip.wasm

MODIFIED (GPL-2.0 section 2(a) notice), 2026-09-01, by Chiisai Games:
         emulators/emulators.js - one statement in the DOSBox module loader.
         Upstream fetched the emscripten glue (wdosbox.js) as text and ran it
         through eval.call(window, text). This site ships a Content-Security-
         Policy without unsafe-eval, which refuses that call (EvalError inside
         dosboxWorker) and left the cabinet unable to boot. The same text is
         now loaded through a blob: <script> element - identical global-scope
         semantics, allowed by script-src blob:. The change is marked in the
         file with a comment beginning "MODIFIED for Chiisai Games"; the
         unmodified upstream is js-dos/emulators as published for js-dos 8.4.1.
         All other files are unchanged.


DOSBox
------
wdosbox.wasm is DOSBox compiled to WebAssembly by the project above.
Copyright (c) 2002-2021 The DOSBox Team
Licence: GPL-2.0-or-later
Home:    https://www.dosbox.com/
Source:  https://sourceforge.net/projects/dosbox/


DOOM (shareware)
----------------
The game the cabinet runs lives one directory up (../DOOM.EXE, ../doom1.wad,
../default.cfg). It is the original shareware episode of DOOM v1.9,
Copyright (c) 1993-1995 id Software, redistributed under id Software's own
shareware terms as stated verbatim in ../SHAREWARE-README.TXT.
DOOM is a registered trademark of id Software LLC, a ZeniMax Media company.
Chiisai Games is not affiliated with or endorsed by id Software.

Provenance (download sources, sizes and hashes) for every file is recorded in
../README.md.