A radio gossip host has been murdered on a sleeper train stopped overnight by a snow slide, and you play the railroad's detective, who slept right through it. You search his room for clues, question suspects in cinematic 3D rooms and catch lies by showing them evidence, while a notebook tracks people, statements and a timeline. The ending depends on whom you accuse and whether you can prove it. You move between scenes rather than walking freely, and it's best with the sound on.
How the creator made it
The creator gave a team of Claude Opus 5.5 agents the goal of making a browser murder mystery, then playtested each build and gave the team notes. The agents wrote the story and the game code, scripted the train interiors in Blender and cast the voices with Fish Audio Drama 3. The creator says the work took eight days and went through twelve versions. The team started with talking portraits, then moved to rigged 3D characters and used Audio2Face to animate them to the recorded lines.
From their page on aiformortals.co ↗, a video on YouTube ↗ and a page on meridian-making-of.vercel.app ↗.
The prompt
/game-studio:new I want to build a murder mystery game that runs in the browser. You're on a 1936 sleeper train stopped overnight by a snow slide, someone's been murdered, and you have to interview six suspects before the sheriff arrives at dawn. Every suspect is voiced, so you catch liars by how they sound. Make it look cinematic, with real 3D rooms.More like this
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The game and its prompt belong to @per_simmons. Preview recorded by us. Made this game? Here's how we list it.