Metro Shift

Cinevva's analyzer read this game's design doc and its source, then wrote the brief below. "Make your own" hands it to the game creator as your opening message, so you start from a real spec rather than a one-line idea.

Create a small playable 3D third-person exploration game titled “Metro Shift.” The player is a simple low-poly humanoid viewed from behind by a trailing third-person camera: a blue rectangular body/coat with a round peach-colored head and no visible facial features. Place the player initially at the far end of a long subway/metro platform, facing down the track toward the station interior.

Build the environment as a long enclosed underground station in a clean, stylized low-poly/primitive 3D art style. Use a dark blue-black background and atmospheric fog. The floor is broad gray concrete, with a dark central track bed running lengthwise. Put two parallel gray metal rails in the track bed and regularly spaced brown wooden sleepers/ties between them. Add bright yellow safety-edge strips along both sides of the track. Surround the space with tall gray side walls, a rear wall, and a dark ceiling. Add repeated chunky gray support pillars along both sides, plus simple long pale ceiling light fixtures at the pillar intervals. Include a few simple benches along the side platforms (two on each side, positioned at different distances) with a muted gray urban/station appearance.

The central objective is a highly visible glowing green line marker ahead on the track/platform area: a vertical rectangular green sign/pillar about human height with a wider short cap at its top. Give it a saturated mint-green color with a subtle darker green emissive glow. The player completes the game by walking close to this marker; when within roughly 2.2 world units, mark it found, increase its glow, and change the HUD message to: “Marker found — the next train is arriving.” followed by a highlighted “GREEN LINE” badge. There are no enemies, combat, collectibles, score, timer, lives, or train sequence; the objective is simply to locate the marker.

Use responsive keyboard and mobile controls. WASD and the arrow keys move the player around the platform, Shift makes movement run faster, and Space makes the player jump with gravity. Support a mobile virtual joystick. Keep the camera following the player in third person with a perspective view, showing the tracks, yellow edges, pillars, and green marker ahead. Use basic shadows, soft lighting, and a cool blue-gray station palette with warm yellow safety strips and the green objective as the main color accent.

Add a fixed, non-interactive HUD over the 3D view. In the upper-left, show a translucent near-black panel with a thin subtle border and the title “METRO SHIFT” in uppercase, bold, widely spaced light blue text. Beneath it show “Walk the platform and find the green line marker.” in white. At the bottom center, show a translucent dark instruction panel reading “WASD / arrows to walk · Shift to run · Space to jump · mobile joystick supported”. Ensure the game fills the viewport and works on desktop and mobile aspect ratios.