🎯 Code Breaker

Crack the secret color code using the hot/cold clues — pure detective deduction!

Playing here doesn't save progress. Open it in TernQuest to keep stars and coins, or make a free account.

What does Code Breaker teach?

Code Breaker is a math game for 3rd grade – 5th grade that practises deduction (mastermind). Like every TernQuest game it is tied to a skill on the curriculum map (California Common Core, PK–5), and Pip the tern gives hints, never answers.

Is it free?

Yes. Code Breaker is in the free tier, playable in the browser with no ads and no signup. A free account (one child) saves progress and stars.