Cipher Grove2–5 min
Sudoku
Sudoku turns a compact set of clues into a satisfying chain of deductions.
Deduction Deck
Deduction Deck turns a compact set of clues into a satisfying chain of deductions. Read the board, rule out contradictions, and commit only when every clue supports the move.
W5
Production card complete
Deduction Deck is in the 200-game roadmap.
The rules, controls, runtime, responsive behavior, SEO copy, hint policy, and mobile port notes are already specified. It becomes playable when its shared grid-constraint kit enters production.
How to play
Small rules. Plenty to master.
Deduction Deck turns a compact set of clues into a satisfying chain of deductions. Read the board, rule out contradictions, and commit only when every clue supports the move. The scoring system rewards deliberate streaks rather than frantic random input. Its identity comes from a distinctive objective and rule twist rather than a cosmetic reskin. A typical session lasts three to eight minutes, works comfortably with touch or keyboard, and saves progress without requiring an account.
01
Learn the move
Use touch, pointer, or the shown keyboard controls to complete Deduction Deck’s objective. New constraints arrive gradually so the challenge stays readable.
02
Build a run
Read the whole playfield before acting.
03
Beat your best
Build a safe streak before chasing bonuses.
Controls & accessibility
Controls: Touch, pointer, and keyboard. The game supports reduced motion, color-independent cues, clear focus states, and a touch-first layout.
Frequently asked
When will this game launch?
It is scheduled for a post-launch Questly content wave.
Will it work on mobile?
Yes. The concept is constrained to touch-first controls.