If you've never played mastermind before, read the detailed instructions.

How this game works

The arrow shows you the current row.

To play:

  1. Click on the colors in the bottom tray to choose which one to place.
  2. Then click in one of the boxes in the current row to place it in the playing area.
  3. When you've placed your colors, click the "that's my guess" button. You'll see a display of how well you did and the arrow will move up a row.
Tip: If you want to guess mostly the same colors as before, hit the "copy" button to copy your last guess to your current row.

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