Freedom: Diegesis

This world was once a predictable place, where heroes stomped minions and rescued damsels. But now it is mutating into something much stranger. As a result the heroes are missing or unwilling, and the villains have huddled away searching for more from life. The protagonist, a disgraced prisoner, finds himself in over his head amidst these changes. He's tasked with infiltrating the Eastern Lands and rescuing his kingdom's princess in exchange for freedom. But he's no warrior, and the world's mutation is spreading...