🎛️
Your games, saved
Create named challenges, keep them in My Games, duplicate and refine them, and follow separate statistics for every design.
The definitive code-breaking collection
Think deeper.
Crack everything.
From classic number codes and vivid colour pegs to positional clues, fog and permutations—plus an optional Ultimate Designer for creating and saving games of your own.
Seventeen curated games + Game Designer
There is always another way to break the code.
Start with familiar rules, then change the alphabet, information, pressure or memory—or design a challenge of your own.
☷Ultimate DesignerGame DesignerCreate it once. Make it yours.
Choose the rules, save named games to your personal library, duplicate and refine designs, and keep statistics for every game you create.
#Standard NumbersThe classic numerical code
Find four unique digits. Each clue tells you how many are exact and how many belong elsewhere.
●Standard ColoursThe tactile colour classic
Crack a four-peg colour code. Colours may repeat, and every guess earns exact and misplaced clues.
○Blank PegsEmpty can be an answer
A blank space becomes a real symbol, so absence may be part of the hidden colour code.
≠No-Repeats ColoursEvery colour is unique
The standard colour challenge with duplicates forbidden in both the secret and your guesses.
↻Repeating NumbersDigits may appear twice
Classic number deduction, except the same digit can occupy more than one position.
✦Super ColoursA broader palette
More available colours dramatically expand the possible codes without changing the familiar clues.
▰Mini ColoursA compact eight-attempt puzzle
Four positions and six colours, with fewer attempts for a faster, more focused challenge.
⑤Five-Slot ColoursOne more position
Five hidden pegs turn the familiar colour puzzle into a substantially deeper deduction.
PFBPico Fermi BagelsWords replace the numbers
Fermi means an exact digit, Pico means a misplaced digit, and Bagels means no digit matched.
⇄Number PermutationPut every digit in order
All six digits from 0 to 5 appear exactly once; the challenge is discovering their hidden ordering.
◎Exact-OnlyOnly perfect positions count
You learn how many symbols are in their exact places, but misplaced matches remain secret.
↔Misplaced-OnlyLocation clues disappear
Clues reveal symbols that belong elsewhere while withholding exact-position information.
ΣTotal MatchesOne combined clue
Exact and misplaced matches are merged into a single total, leaving you to separate them.
▦Positional FeedbackClues attach to slots
Feedback is shown against individual positions instead of only as an aggregate score.
∞EndlessKeep the streak alive
Break one code after another and see how long your deduction streak can continue.
☁Fog of WarYour history fades
Earlier guesses become hidden, testing memory and making the scratchpad especially valuable.
◷Time AttackSolve against the clock
The standard deduction race gains a hard time limit and rewards fast, accurate reasoning.
Built for real deductions
More game. Less guesswork.
🔒
Lock what you know
Keep a certain symbol in position across future guesses and unlock it whenever your theory changes.
✕
Rule symbols out
Cross impossible digits and colours directly off the keypad without losing your train of thought.
📝
Working scratchpad
Add notes beside every symbol and keep difficult deductions organised.
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Stats and leaderboards
Track games, codes broken and solving time, with supported platform leaderboards for fair comparable modes.
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A premium game every day
Play one complete featured premium round free each day and discover a new favourite at your own pace.
One-time unlocks. No subscription.
Start free. Go as deep as you like.
The two classics stay free. Upgrade once for the complete curated collection, or add the tools to create a collection of your own.
Free
£0
A complete place to begin.
- Standard Numbers
- Standard Colours
- One featured premium round each day
- Core deduction helpers and statistics
Ultimate
£4.99
Every curated way to break a code.
- All 17 curated games
- All future curated code-breaking games
- Unlimited play
- Eligible platform leaderboards
Ultimate Designer
£7.99
Everything in Ultimate, plus your own game studio.
- Create and name custom games
- Save them in My Games
- Edit and duplicate designs
- Statistics for each saved game
Planned UK launch prices shown. Purchases are permanent on the purchasing platform; actual local price and availability are shown by the App Store or Google Play before purchase. Existing Ultimate owners can add Designer for the localized difference.
Free to start
Find your next favourite code.
Play the two classics free, discover a featured premium variation each day, and unlock the complete collection when you are ready.