Rules
- Build a 4-symbol combination.
- Each try shows exact symbols and present symbols.
- Find the code in 8 tries or fewer.
Playable solo game
Mastermind
Mastermind is a solo deduction mini-game: choose 4 symbols, read the clues and refine your next guess.
logiccodededuction
- Phone = controller
- Multiplayer
- No install
- QR code
Playable version
Break the code
Crack the code, read the clues and tighten each guess.
Instant soloNo accountReplayable
Free playable Mastermind version. For groups, TABUZZZ adds phones as controllers, scores and multiplayer rooms.
Why this game works
The fun comes from logical progress: every mistake gives useful information.
Game history
Code-breaking games have long existed in tabletop play. Mastermind made the format famous with a short, readable rule.
FAQ
Is Mastermind free?
Yes. Mastermind is playable for free in solo mode, with no account and no installation.
Do I need an account to play Mastermind?
No. Mastermind runs directly in the browser so the first round stays immediate.
How is this different from TABUZZZ?
Mastermind keeps the solo pleasure: Crack the code, read the clues and tighten each guess. TABUZZZ mainly adds multiplayer, QR codes, sessions, teams and shared-screen hosting.
Sources
Primary source: the public TABUZZZ catalogue and the rules shown on this page. Usage contexts are editorial guidance; they do not guarantee a group's atmosphere or a particular outcome.
Editorial review: 11 August 2026. Responsible publisher: DOHM. Factual corrections can be reported from the contact page.
