Chess Variant Forge turns your ideas into playable chess variants in seconds. Just describe the rules in plain English — AI handles the rest.
From idea to playable game in three simple steps.
“Every piece is a knight except the kings” or “Pawns can move backwards” — anything goes.
Our AI interprets your description, generates a complete rule set, validates it, and lets you review before playing.
Your variant is playable immediately — right in the browser. Invite friends, save to your library, or publish for the community.
A complete toolkit for creating, playing, and sharing custom chess.
Describe your variant in plain English. No programming, no complex rule editors — just tell the AI what you want.
AI generates a fully validated rule set in seconds. Review the rules, tweak the description, and regenerate until it is perfect.
Invite friends to play your custom variants in real time. Share a link and start a match instantly.
Use the interactive AI designer to iteratively refine your variant through conversation. Ask questions, get suggestions.
Browse, play, and fork variants created by other players. Discover creative rule sets and build on them.
Every variant is automatically validated for playability. Catch issues before you play — missing pieces, illegal positions, and more.
Discover variants created by players around the world. Fork and remix them, or publish your own.
by ChessMaster42
Every piece moves like a knight, except the kings. Chaotic and unpredictable.
by VariantWizard
Kings move like queens and queens move like kings. Protect your fragile queen.
by DarkKnight
You can only see squares your pieces can move to. Pure information warfare.
Start creating custom chess variants today.
Pro
$5/month
Free accounts can browse and play community variants. Subscribe to create your own.