Reversi Free (3.9 MB), flip your way to victory by challenging the CPU engine with 10 difficulty levels or going for a 2-player game, plus features like hint, save and resume, animation and sound effects, optional piece sets and boards.DroidZebra Reversi (3.2 MB), improve your skills in this excellent app with a strong built-in Zebra engine. Can't beat it? Set the strength of the engine by limiting the number of moves it can analyze, or play in the practice mode where it evaluates the best move for you.