The Ratline challenges players to find Nazi criminals using nothing more than their own brainpower, limited starting information, and the ability to chat up people and search an archive. Its mysteries are inspired by history, with plenty of details that will probably lead some to learn more about World War II and the real ratline but also have plenty of solid fictional twists and turns. The investigation action is decent but limited by the genre’s core ideas. The phone conversations add a little variety, but this is still a game about reading, re-reading, and thinking while looking at photos. The Ratline is designed for fans of titles like The Roottrees Are Dead or The Golden Idol who are looking for more puzzles to crack open.