Monsoon Run

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 browser-based 3D endless runner titled “Monsoon Run,” set in a stylized futuristic Indian city identified in the HUD as “MUMBAI SECTOR 07.” Use a third-person chase camera behind and slightly above a small humanoid runner, looking down a long straight three-lane road. The world should have a cool blue-gray rainy/monsoon atmosphere: muted blue-gray sky/background, matching fog fading into the distance, dark asphalt, pale concrete sidewalks on both sides, yellow lane markings dividing the three lanes, utility poles along both sides with sagging dark overhead wires, and repeated city/commercial building models flanking the road. Use soft shadows and a cinematic cool cyan color palette with warm sunlight highlights.

The player is a compact stylized sci-fi runner centered in one of three lanes, represented by a red/orange capsule-like body, a glowing cyan-blue dark visor, and a dark rectangular backpack. The runner automatically moves forward continuously down the road; the camera follows smoothly, with subtle lateral tracking as the player changes lanes. The road itself can be an extended straight segment and the city should recede into fog. Include a glowing purple/blue monster or machine pursuer positioned behind the runner on the road, following the runner’s lateral position and visually communicating the threat described by the title screen, but do not add mechanics not present in the source.

Core controls and rules: keyboard A/D or Left/Right Arrow switches one lane at a time between left, center, and right; Space, Up Arrow, or W makes the runner jump when grounded. Provide matching touch controls at the bottom: circular left and right arrow buttons and a rounded rectangular JUMP button. The runner starts in the center lane. Horizontal movement should smoothly approach the selected lane. Jumping uses an upward impulse and gravity, allowing the runner to clear low traffic obstacles. The forward speed starts around 11 units per second and gradually increases with distance, capped around 17, making the run progressively faster.

Spawn traffic ahead of the player at varying distances in one of the three lanes. Traffic types are red race cars, green cargo trucks, and occasional bus-like blue rectangular obstacles. Cars and trucks should use stylized low-poly city/racing vehicle models; the bus can be a solid dark teal/blue box-like obstacle. Traffic moves toward the player because the runner advances through the world. A collision occurs when the player is close to an obstacle in depth and horizontal lane position and is not high enough in a jump; end the run immediately. Spawn floating cyan glowing diamond collectibles near traffic, at varied lanes and slightly varied heights. Make the diamonds rotate continuously; collecting one requires being near it horizontally and vertically and increases the diamond count by one, hiding/removing it.

Use an HUD fixed over the 3D view. At top left display cyan uppercase text “MONSOON RUN // MUMBAI SECTOR 07.” At top right display two lines, “Distance 0m” and “Diamonds 0,” updating as the player runs and collects items. Near the bottom show a translucent dark pill hint reading “A / D or ← / → to switch lanes · Space / ↑ to jump.” At the bottom corners show translucent outlined touch buttons: left/right lane arrows on the lower left and “JUMP” on the lower right. Keep the HUD readable with white/cyan text and subtle shadows.

On initial load, show a full-screen translucent dark blue overlay over the city with a centered rounded dark card. The card title is “Monsoon Run,” with the description: “Run through a living Indian city, collect diamonds, clear traffic, and stay ahead of the machine stalking the road.” Include a bright cyan rounded button labeled “Start demo.” Clicking it, pressing Enter, or using the restart button after failure starts/resets the run and hides the overlay. On collision, stop the run and show the overlay again with title “Run ended,” text reporting the meters traveled and diamonds collected, and a button labeled “Run again.” Preserve the polished minimal sci-fi UI style: dark navy translucent panels, cyan borders/highlights, bright cyan primary button, rounded corners, and clean sans-serif typography. Ensure it works responsively on desktop and mobile, with keyboard and pointer/touch input.