Todo Ryunosuke Tantei Nikki: Ogon no Rashinban

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Todo Ryunosuke Tantei Nikki: Ogon no Rashinban casts you as a hardboiled detective aboard a 1920s transpacific liner. A murder rocks the ship's voyage from San Francisco to Yokohama, forcing you to parse testimony, track physical clues, and map connections between passengers. The interface lets you navigate the vessel's grid as you hop between cabins and deck areas, using a rudimentary point-and-click system to access scenes. Progress depends on matching witness statements to physical evidence rather than timed puzzles or combat. This 1990 sequel swaps the first game's grid-based visuals for isometric rooms layered with character portraits, giving the ship a more structured feel. While the lack of voice acting or animation dates some elements, the focus on deductive logic remains sharp. Riverhillsoft’s attention to procedural detail, like cross-referencing alibis with ship manifests, earned it a cult following among mystery fans. It runs on obscure 80s-90s Japanese platforms but remains a proof-of-concept for text-free investigation mechanics.