Karvan Drive

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 driving game titled “Karvan Drive” / “KARVAN”, presented as a polished Pakistani-inspired luxury off-road driving slice. Use a third-person-follow vehicle camera by default, with a dark teal/blue atmospheric scene, soft fog, warm sunlight, long shadows, and a restrained luxury UI: translucent near-black glass panels, thin muted-gold borders, uppercase typography, and gold accent labels. The opening screen should remain over the rendered world: a centered large rounded panel with the eyebrow “PAKISTAN • LUXURY • OFF-ROAD”, huge “KARVAN” title, a description about driving a premium Pakistani-inspired SUV across city streets, mountain trails and snow passes, and buttons for CITY DRIVE, OFF-ROAD, SNOW PASS, RAIN DRIVE, GARAGE, SETTINGS, and a full-width START DRIVING button.

Build three selectable environments, with only the selected environment visible. CITY DRIVE is a flat green-gray city ground with a dark central road grid: a broad north/south road and east/west crossings plus narrower parallel streets, each with a narrow pale yellow center marking. Surround the roads with repeated simple blocky commercial buildings in muted gray/blue tones, some with warm gold horizontal shop bands, and sparse tall streetlights. OFF-ROAD is a brown dirt area with a winding/offset series of rectangular dirt trail segments, dark low-poly mountain/cone hills in the distance, scattered rocks, and a blue-green river crossed by a simple wooden bridge. SNOW PASS is a pale blue-gray snowfield with dark gray mountain hills, scattered stylized pine trees, and a sequence of pale snow-road segments. Use fog to blend the low-poly scenery into the horizon. The vehicle should be a simple stylized SUV assembled from box-like geometry: chassis, cabin, hood, dark windshield, and four dark cylindrical wheels, with the selected vehicle’s body color. A luxury SUV asset may be used if available, but the visible result should preserve the compact boxy vehicle silhouette.

The core interaction is driving through checkpoint rings. Place eight gold torus checkpoint gates along each route; in the city they are arranged along the central road route, while off-road and snow routes use varied x/z positions through their trails. The HUD must show the next checkpoint as “1 / 8” and advance it when the vehicle comes within roughly 7 world units of the current ring. Hide each passed ring. After all eight are reached, show a toast such as “MISSION COMPLETE — route conquered” and reset the route checkpoints for another run. There is no combat, traffic, fuel, damage, or timer system.

Implement driving with keyboard controls: W accelerates, S brakes/reverses, A and D steer, SPACE applies a stronger handbrake, C cycles cameras, number keys 1–5 select weather, and E exits the vehicle. Use acceleration, braking, drag, steering inertia, terrain grip, a forward/reverse gear state, and RPM display. Cap speed according to the selected vehicle. The vehicle should move forward in its local -Z direction, rotate based on steering and speed, and bob subtly over off-road and snow terrain. If the player exits, stop movement and hide the exit button; place the vehicle slightly to the side and display a toast indicating that the vehicle was exited. Include a way to start/re-enter the vehicle.

Provide four selectable garage vehicles with distinct colors, names, silhouettes/spec values, and handling profiles: “Khyber X7” (SUV, gold, top speed 145, acceleration 25, handling 78, off-road 82, snow 70), “Ravi Trailhawk” (teal pickup, 132, 22, 70, 96, 82), “Mehrana City” (silver compact, 118, 19, 92, 42, 48), and “Karakoram LX” (dark red luxury, 155, 28, 74, 91, 78). The garage is a modal glass panel with vehicle name, a stylized colored preview car, specs for top speed/acceleration/handling/off-road/snow grip, PREVIOUS and NEXT buttons, SPAWN VEHICLE, and CLOSE. Spawning replaces the current vehicle and resets it on the current map.

Add weather cycling through CLEAR, RAIN, HEAVY, SNOW, and FOG. The WEATHER button cycles these states and the number keys select them directly. Change fog color, near/far distance, and hemisphere light intensity per weather. Rain and snow should be represented by visible particle fields around the car: rain falls quickly as blue-gray streak-like points and snow falls more slowly as white points. The menu’s RAIN DRIVE button should enter city mode and set rain. Keep the world daytime with warm directional light; SETTINGS can simply show a toast such as “Graphics: high · shadows enabled · daytime locked at 14:00”.

The in-game HUD should be fixed over the canvas. At top left show “KARVAN / 01” in gold. At top center show a glass stats panel with large speed in KM/H, plus RPM and GEAR; start at 0 KM/H, RPM 900, gear N. At top right show MAP, MODE, WEATHER, and CHECKPOINT values, initially CITY, CITY DRIVE, CLEAR, and 1 / 8. At bottom left show the control legend “W / S accelerate & brake”, “A / D steer · SPACE handbrake”, “C camera · 1–5 weather · E exit”. At bottom right show WEATHER, CAMERA, and EXIT VEHICLE buttons, with EXIT VEHICLE hidden until the player is in the car. Add brief centered-bottom toast notifications for mode changes, camera changes, weather changes, spawning, exiting, and completion.

Support four camera modes cycled by C or CAMERA: THIRD PERSON (far follow view behind and above), CLOSE THIRD (near follow), HOOD CAM (camera just ahead/above the hood), and DRIVER VIEW (camera inside/near the cabin). Smoothly interpolate camera movement and look toward a point ahead of the car. Use responsive layout: on narrow screens hide the control legend, compress the HUD, and stack the garage preview/spec layout. Render with shadows, ambient hemisphere fill, a warm directional sun, a cool rim light, anti-aliasing, and a perspective camera. The overall art direction is low-poly, moody, premium, and minimalist, matching the screenshot’s dark teal world and gold-accented glass interface.