Nightwalker is a single-player adventure, casual, and puzzle game in which players navigate a mystery set in the port city of New Orleans, collecting evidence, interviewing townspeople, and making decisions that influence the story's outcome. In this game, players take on the role of a nosy reporter investigating an underground heroin ring, exploring seedy bars and alleyways to uncover clues and gather information to present to the police. It stands out with its text-based storytelling enhanced by sharp graphics routines and an extensive database, offering many hours of varied gameplay. The game emphasizes decision-making, evidence collection, and strategic source evaluation, providing an immersive experience in a noir-style setting.