Cindy Grau of Manning is another big Iowa Lottery winner, claiming a $100,000 Mega Crossword’s scratch game prize. The Iowa Lottery announced Grau won the first of six prizes available in the game, claiming her prize last week at the lottery’s regional office in Storm Lake. Grau purchased her ticket at Casey’s East in Carroll. The $100,000 Holiday Mega Crossword is a $10 scratch game.