Telephia reports that - at least when it comes to mobile-phone gaming - puzzles are a girl's best friend. And right now, they're generating about 33% of the revenue in the U.S. mobile gaming industry.

According to the Telephia Mobile Game Report for Q1 2006, the most popular titles were Tetris, Tetris Deluxe, and Bejeweled, followed by JAMDAT Mahjong. In this category - puzzle and strategy games - women account for 72% of the revenue.

Kanishka Agarwal, Telephia's V.P. of New Products, said "Mobile game purchases continue to grow with more than 8.6 million games bought in April, increasing 60 percent since the beginning of the year."

Other popular categories for women are trivia and word games, like Who Wants To Be A Millionaire 2005, published by Cosmic Infinity. Agarwal adds, The casual nature of mobile games provides tremendous appeal to women, who are not traditionally hardcore gamers by console or online gaming standards...the wireless industry has presented a hungry target audience willing to pay premium access to games through their cell phones."