Freedoom 0.13.0: complete original Phase 1 (four nine-map episodes) and Phase 2 (32 maps), unchanged WAD data, art, sound and music. Copyright 2001–2024 Contributors to the Freedoom project; BSD-3-Clause, COPYING.txt. Original CREDITS.txt and CREDITS-MUSIC.txt retained. Full original release and three manuals are available alongside corresponding source. No proprietary Doom artwork or registered WAD is included.
Chocolate Doom 3.1.1: id Software, Simon Howard and contributors; GPL-2.0-or-later, ENGINE-COPYING.md. Nuked OPL3 by Alexey Khokholov, GPL-2.0-or-later. Full engine AUTHORS and source retained.
Leaf browser integration (2026) is GPL-3.0-or-later; the combined build selects GPLv3 or later to include shared persistence code. Full license: GPL-3.txt. Original game rules and campaign data are unchanged. Browser patch adds the yielding main loop and native SDL texture upload from OscarRevollo/doom-wasm (GPL-2.0-or-later), fixes the single-thread OPL initialization wait corrects Emscripten runtime exports and keeps the native framebuffer fixed while CSS fits phone and fullscreen sizes. Short on-screen taps last at least 50 ms so native 35 Hz input samples can see them; Pause/blur release immediately. Native Quit retains the original credit screen and then explicitly terminates the browser runtime after native shutdown. Exact reference commit is recorded in corresponding source. Audio remains enabled, including native OPL music. SDL2_net is disabled: this release is single-player.
Browser libraries: Emscripten 4.0.23 (MIT/NCSA with individual notices), SDL 2.32.8 and SDL_mixer 2.8.0 (zlib), Ogg/Vorbis (BSD), libpng (libpng), zlib (zlib), fflate (MIT). Full notices in THIRD-PARTY.txt and corresponding source.
Both campaigns have isolated local native save slots. Native save-size emulation limit is disabled to allow larger Freedoom maps; original menu/save format is preserved. Pause freezes time and audio. Stop flushes written files. No account, game server, hosted inference, or recurring service is required. Keep a separate save before clearing browser data.