Orbium · Marble Switchyard — modified Workshop edition, 2026-11-05.
Original JavaScript game: Copyright 2018 Björn Nilsson.
Source: https://github.com/bni/orbium/tree/d49c4a419cde755990c4f2e8921ceb506e7a1fcf
90 GitHub stars observed 2026-11-05. Repository last pushed 2024-08-21.
Original source code: GNU GPL version 2. This modified work is GPL-2.0.
All corresponding source for this edition is served here, unminified:
index.html, style.css, engine.js, levels.js, art.js, app.js. No compilation or
third-party dependencies are needed; serve these files at the site root.
Original graphics and sound are NOT included. All procedural canvas art and
optional synthesized sound were newly created for this edition and released
under GPL-2.0. The upstream noncommercial artwork license does not apply to them.
Changes: responsive interface; keyboard and explicit launch controls; original
first three layouts plus a four-orb lesson; untimed default, optional timed
mode; local board-completion records; fixed-step simulation; no multiplayer,
server client, editor, email links or external runtime assets.
Full upstream levels are preserved in levels.js for source provenance, while
this focused edition exposes the three introductory layouts only. Later
advanced mechanisms are not covered by this edition's guide.
This program comes with ABSOLUTELY NO WARRANTY. You may redistribute and modify
it under GNU GPL version 2; see LICENSE.txt.