Share Word Search Arthur's Mystery Envelope To create your word search for "Arthur's Mystery Envelope", first select the words you want to use. Choose up to twenty words for your game by clicking on a suggested word or enter your own by typing over an existing word. Suggestions for your word search; click to add. MYSTERY ARTHUR MARKED LARGE LOOKS BROWN MARC ASKS How do you want the words displayed in the game? Forward Down Diagonal Backward Puzzle Title