Fish Fillets – Next Generation 1.0.1 — Ivo Danihelka, Brian Raiter and contributors; original Fish Fillets artwork/game by Altar Interactive. Original engine and complete data release are GPLv2 or later; COPYING is retained unchanged. This combined browser adaptation selects GPLv3 or later (GPL-3.txt). All 8,956 original data files, levels, images, scripts, Czech speech, music, intro movie and manuals are byte-for-byte unchanged; ASSET-LEDGER.json records each resource. English subtitles are selected by default.
GNU Freefont — copyright 2002/2003 Free Software Foundation, Primoz Peterlin and contributors, GPLv2 or later; original font notice: FONT-NOTICE.txt. Corresponding FreeSansBold CVS 1.8 editable SFD is supplied in source/freefont-cvs-1.8.tar.gz. Original font files are retained. Public-domain Sodipodi flags: FLAGS-NOTICE.txt.
Lua 5.1.5 — Lua.org / PUC-Rio, MIT, LUA-LICENSE.txt. PL_MPEG — Dominic Szablewski, MIT, PL-MPEG-LICENSE.txt, pinned c871f2be022ece7ef4f64230b4fb8e1fb9eb6023. Emscripten 4.0.23 full license/source: THIRD-PARTY.txt and source/. fflate MIT notice/source is in the integration archive.
Leaf Arcade browser adaptation, 2026, GPLv3 or later: original native SDL/Lua puzzle engine compiled to WebAssembly; on-demand checked original resource groups; true-colour SDL screen flag adaptation, outlined UTF-8 text and colour-key support, faithful sample-defined music loops, native save persistence and native controls with short taps held until the original 10 Hz engine samples their first frame. The unchanged MPEG-1 intro is decoded by PL_MPEG; its original MP3 packet bytes are decoded by browser Web Audio, with original skip/return behavior. Native puzzle rules and scripts are unchanged.
No account or game server is required. Native F2 saves the current puzzle, F3 restores it, and completed solutions are saved automatically. Stop preserves written files; clearing site data removes browser progress. The full original manuals are available inside manual.zip and the complete data source archive.