Knights of Xentar is a side-scrolling action game developed by U.S. Gold and published by Sega. The game follows the story of a knight named Xentar, who must rescue a princess from the clutches of an evil sorcerer. Players control Xentar as he navigates through various levels, battling enemies and collecting power-ups to enhance his abilities. The game features a mix of exploration, platforming, and combat, making it a well-rounded and engaging experience.

The game's manual explicitly warns players: until you verify that the Xentar code wheel is present, as it is required to play the diskette-based version. How It Works

For those lucky (or unlucky) enough to have owned a big-box copy of this notoriously lewd Japanese RPG, the code wheel was your passport to adventure. For everyone else—especially modern players trying to run the game via abandonware or GOG—it represents a brick wall of nostalgic DRM.