Materials and License · Credits

Artwork and models

Cards, pieces, icons and boards use project-made SVG, CSS and procedural graphics. The Hanoi and Balance Blocks models were built for this project in Blender; the twist cube also uses a project-made model. Text uses fonts available on your device.

Third-party software

The following notices cover reused software or data. Author credits and full license terms are retained.

• Three.js 0.180.0 — MIT · Full notice
• cannon-es 0.20.0 — MIT · Full notice
• chess.js 1.4.0 — BSD-2-Clause · Full notice
• xiangqi.js — BSD-2-Clause · Full notice
• Move Exchange movement vectors - Jack Adamson, MIT· Source and full notice

Each game describes the rules used on this site. Software licenses do not imply endorsement or permission from other game or brand owners.

Updated/Updated: 2026-09-08