Online number deduction
How to play Codebreak Duel.
Set a secret code and crack your opponent’s before they crack yours. Play an online 1v1.
Play Codebreak Duel free ↗Your first game
- Choose Play with friends to create a private room, or Quick Play to search.
- Share the room invite, agree the code rules and set your secret when prompted.
- Read each guess result and race to crack the other code.
A useful starting strategy
Use the same clue discipline as Practice. Your opponent’s speed does not make a random guess more informative.
Can I play on my phone?
Yes. KRACKO supports mobile touch controls and desktop play. Use Install app on the home screen for installation options. Online rooms require an internet connection.
Do I need other players?
Two real players are required. A private invite is the most predictable way to start; Quick Play depends on another player entering the queue.
Games are free to play in the current release. Read the in-game rules for the settings and limits of your chosen format.