DuelMines update soon

My first PalmOS program, the highly-addictive game DuelMines (the head-to-head version of MineSweeper), is going to be revised. I've made the game less luck-dependent by avoiding the creation of big "islands", made the AI smarter and faster and added the click sound when a cell is uncovered. Once I add support for 5-way navigator, I'll publish the 1.7 version, hoping for more success.
Really, it's not to advertise: I like this game too much, I'm addicted to it, and my friend living with me is too. I can't understand why it hadn't any success... Any idea?