CodexRex
Play CodexRex, a free Mastermind-style code-breaking game. Guess the hidden color code: black pins mean right color and position, white pins mean right color elsewhere.
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Time: 00:00
Best: -
Time: -
Attempt 00
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How to play
How it works: Fill the row with four colors and submit it. Black pins mark a correct color in the correct slot; white pins mark a correct color elsewhere.
Score and best result: Solve the code with as few attempts as possible. If attempts are tied, the faster time wins; a hint uses an attempt.
Watch CodexRex gameplay
See how black and white clue pins reveal the hidden color code in four attempts.
Watch on YouTube