Alexander the Great. Genghis Khan. Queen Elizabeth I. Che Guevara. Throughout history, revolutionary leaders have taken very different paths to power, bringing about prosperity and poverty, peace and sometimes anarchy to their people. Now Microsoft Corp. and Lionhead Studios will explore the journey to rule, with you in pursuit of a kingdom, in “Fable III,” the exciting new game in the critically acclaimed “Fable” franchise. The title’s debut was confirmed today at gamescom in Germany by Peter Molyneux, Lionhead’s creative director, and will be available exclusively on Xbox 360 in the 2010 holiday season.