master-code

Master Code is a polished color-code deduction board game for Poe. Tap color pegs at the bottom, fill the current row directly, submit a guess, and use the feedback pins to break the hidden four-peg code.

The game is inspired by classic code-breaking tabletop play, tuned for compact Poe sessions. The Three.js board fills most of the viewport, every visible peg and row slot is easy to tap at 300x500 and 350x509, and the top-right help button explains the rules without leaving the game.

What you can do

• Tap color pegs directly — choose a color from the bottom tray and tap the current row slots to build a guess.
• Read tactile feedback — black pins mean right color in the right slot; white pins mean right color in the wrong slot.
• Use a deterministic puzzle — the secret is stable for repeatable play, testing, and screenshots.
• Win quickly — solve the code before the eighth row, or reset for a new board.
• Play in tight viewports — the 3D board remains dominant while all active targets stay finger-sized.

Built on Synced-Store

The secret code, current row, submitted guesses, feedback pins, selected color, and final state live in synced-store mutators so the board persists and replays consistently across Poe clients.