Corruption Kingdom

A fantasy RPG where you play as a young mage who infiltrates the Demon King's ancient castle seeking power. After discovering a dying fragment of the Demon King, you receive a forbidden gift: the ability to corrupt and control others. You then turn your attention to the four companions of the hero, using your newfound power to dominate and transform them. The game combines combat, exploration, and sandbox-style progression as you build your influence within the castle.