City Action Simulator

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 mobile-friendly 3D third-person city action sandbox titled “CITY ACTION SIMULATOR.” Use a Three.js-like real-time 3D scene viewed from behind/above the player with a perspective camera, soft shadows, ACES-style cinematic tone mapping, a pale blue sky/background, matching blue fog, and a compact low-poly asset style.

Opening screen: before gameplay, show a full-screen dark blue gradient menu with a centered translucent dark panel, rounded corners, thin light border, and shadow. Display the large white all-caps title “CITY ACTION\nSIMULATOR,” the subtitle “Explore the district, take a car, earn cash and stay ahead of the heat.”, a large yellow rounded “PLAY CITY” button, and the small instruction “Touch joystick to move · drag right side to look.” Clicking/tapping Play hides the menu, starts the game, and shows a toast saying “Explore the city. Your first job is at the shop.”

World: build a square city district on a roughly 120-by-120 ground plane. Use a dark gray-green ground, a grid of broad dark asphalt roads crossing the map at approximately 25-unit intervals, and gray sidewalks/square plots between them. Place simple low-poly block buildings around the road grid, mostly 8-by-8 footprint with varying heights around 3–6 units, in muted blue-gray and brown colors with dark flat roofs. Add about 18 stylized trees distributed around the district: narrow brown trunks and faceted dark green polygonal crowns. Add simple streetlights along roads (thin dark poles with small glowing warm-yellow lamps) and traffic-light poles around the central intersections with glowing red signal heads. Light the scene with a bright warm directional sun plus cool hemisphere ambient light; enable shadows and atmospheric fog so distant city geometry fades into the blue background.

Player and camera: spawn a casual male humanoid character at approximately (0,0,15), rendered from a loaded low-poly animated character asset. Use a third-person camera following/targeting the player at about 6 units distance. The player can move around the district, jump, and sprint. Keyboard-style movement should support WASD, Space for jump, and Shift for sprint; the primary intended interface is touch. The character should cast and receive shadows. Keep the player on the ground except while jumping.

Vehicles and traffic: populate the city with about ten moving vehicles using low-poly sedan, taxi, van, and police-car models. Use varied colors such as blue sedan, yellow taxi, light van, and blue police car. Vehicles travel through the streets and wrap/reposition when they leave the roughly 120-unit district. Police vehicles normally behave like traffic, but when the player’s heat is above 45 they pursue the player; if a pursuing police car comes within about 2.5 units, drain health over time and add a small camera shake. The player may approach a nearby traffic vehicle and press the ACT/interaction control to enter it. While driving, hide the character, attach/follow the player position to the vehicle, and steer and move the vehicle with the joystick; pressing ACT again exits the vehicle beside it and restores the character. Driving quickly raises heat gradually.

Missions and progression: maintain five repeating mission objectives and target coordinates: “Go to the shop” at (18,18), “Drive to the marked location” at (-18,-18), “Escape the police” at (35,0), “Deliver the package” at (0,-35), and “Reach the safe house” at (-35,35). Show the current mission and an objective in the HUD. The player completes the current mission when on foot or in a vehicle within about 5 units of its target, then advance to the next mission cyclically, award