offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Mastermind

Guess the hidden color code with logical deductions in this classic puzzle game.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Crack the color code in 10 guesses or less.

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If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.