Dominoes meet logic puzzles
No guessing — just pure deduction. A thoughtful puzzle game where every solution is earned through careful reasoning.
Download on the App Store
Features
1000+ Puzzles
Carefully crafted puzzles, each with exactly one solution. No guessing required — ever.
Daily Challenges
Fresh puzzles every day in Easy, Medium, and Hard. Build your streak and track your progress.
Smart Hints
Stuck? Hints guide you toward the solution without spoiling the satisfaction of solving it yourself.
17 Badges
From Lightning to Night Owl — earn badges that celebrate your puzzle-solving style.
Works Offline
No internet? No problem. Play anywhere, anytime — your progress syncs when you're back online.
No Ads
No interruptions. No distractions. Just puzzles. The way it should be.
How It Works
Simple to learn. Challenging to master.
Place Dominoes
Drag dominoes from your hand onto the grid. Each domino covers two cells.
Follow the Rules
Match sums, find equals, and spot differences. The coloured regions tell you what to do.
Solve the Puzzle
When every rule is satisfied, you've found the one valid solution. Pure logic.
Ready to play?
Download dotio and discover your new daily ritual.
Download on the App StoreThoughtful. Daily. Satisfying.