"The Other World Hidden in the Castle of Desire" is a side-scrolling pixel platformer developed with Unity, featuring numerous erotic elements. You play as a thief cat who, desperate to pay overdue rent, accepts a mysterious high-paying job to seek a $10 million treasure in an abandoned castle. Face diverse enemies and traps with unique strategies, as no single approach works for all. The game supports keyboard, mouse, and Xbox controllers, with 16 enemy types, over 1,500 frames of high-frame-rate erotic animations, and varied difficulty settings.