This is a Letter Substitution Puzzle.  When you click the 'Start Game' button, there will be 10 words shown below, each of which is 5-10 letters in length.  A random mapping of letter substitution has been applied.  For example, all of the 'E's in the words could have been replaced with the letter 'S'.  The game is to determine what the mapping of cipher letters => clear letters is.  You fill in the mapping in the table below, and the mapped letters are shown under the letters of the scrambled words.

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You can click the 'show answer' button at the bottom of the scrambled words to see the solution.

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Click the 'Start Game' button to get started.