The Demon Crystal

Released by Dempa Shimbunsha in 1985, Demon Crystal is a pioneering fantasy action game developed by YMC Soft. Players control the protagonist, Ares Naizer, as he navigates a monster-infested mansion to rescue a kidnapped princess. With a strong emphasis on puzzle-solving—specifically identifying the requirements to unlock hidden treasure chests on each stage—the game deeply engaged the inquisitive minds of early PC gamers. It remains highly regarded today as one of the few original titles produced by Dempa Shimbunsha, a company otherwise famous for its masterful arcade ports.

Once a peaceful place, Monster Town has fallen under the rule of the servants of the evil Demon Shadler. You take on the role of Ares Naizer, infiltrating a massive, monster-filled mansion to rescue Princess Chris. Your objective is to find the path to the deepest level by locating keys and unlocking doors hidden throughout each floor. You must overcome countless enemies and devious puzzles to reach the place where your nemesis, Demon Shadler, awaits.