Mastermind promotional illustration with colorful secret-code symbols and feedback pegs

Mastermind

Classic & Story • Difficulty • Stats • Local Leaderboard

Symbols

Tip: Click symbols to fill slots. When the last slot is filled, the guess auto-submits.

Mastermind at a glance

Availability
Play now in your browser, with no installation or account registration.
Modes
Classic rounds with four difficulties, or a 20-level Story campaign.
Controls
Click or tap symbols to fill slots. A full row submits automatically; use Undo or Clear Row before it fills.
Price
Free to play.
Saved data
Nickname, progress, statistics and the local leaderboard are saved in your browser. Clearing site data removes local records.

For product questions, contact office@gottaplay.net.

How to play Mastermind

Mastermind is a code-breaking puzzle. Your task is to deduce the hidden symbol pattern before the attempts run out. Choose Classic for a single round or Story for a campaign of 20 levels.

  1. Click or tap symbols to fill the active row. Use Undo or Clear Row while the row is incomplete.
  2. The last symbol automatically submits the guess.
  3. Green feedback pins count symbols in the correct position. White pins count correct symbols in a different position.
  4. Compare the feedback across guesses and change one hypothesis at a time.

A feedback example

If a four-slot guess receives two green pins and one white pin, two symbols have correct positions and another belongs elsewhere. The pins are counts; they do not identify which guessed slots are correct.

Story tiles

Some levels grant a hint revealing a correct slot. A joker acts as a wildcard where possible. Including a bomb in a bomb-enabled level costs an extra attempt.

Is the leaderboard online?

No. Mastermind statistics, nickname and the leaderboard are local to this browser. Another device does not share these records.

Can I choose a difficulty?

Classic offers Easy, Medium, Hard and Extreme. Story uses level-specific rules and continues from the last unlocked level.