"Knights in the Nightmare" for PlayStation Portable, released in 2010 by Altus, is a single-player role-playing game set in the fantasy world of Zemuria. With a Teen rating, players can immerse themselves in the game's engaging storyline, strategic gameplay, and detailed graphics. The game utilizes a gamepad/joystick control system, allowing for intuitive and precise input during gameplay. This title is sure to provide hours of entertainment for fans of the RPG genre on the Sony PSP platform.