OPERATION: ZERO ZONE

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 third-person 3D exploration/investigation game titled “OPERATION: ZERO ZONE — DISTRICT 07.” The player controls an operative in a connected, compact urban district during rainy, overcast conditions. Use a realistic low-poly/primitive environment with dark blue-gray materials, fog, reflective-looking wet streets, cool emergency lighting, and a subdued cinematic surveillance-thriller mood. The camera should follow behind the player at third-person distance, with a perspective view and shadows. Use an animated casual male character if available, with a simple blue-gray capsule humanoid fallback if the character asset fails.

Build the district as a connected outdoor layout on a mostly flat ground plane: three dark asphalt road sections running through the area with short pale road markings, broad gray sidewalks, an 8-unit-tall office block around the center-right, a residential block on the left, a low warehouse and service building farther down the street, and an underground entrance/stairwell near the far end. Add rows of small blue-gray windows to the buildings, street lamps along the left side with pale blue glowing fixtures, orange construction barriers, a crate, industrial pipe, and an office desk/chair. Place a blue glowing checkpoint terminal/object at the starting street. Place an office entrance/security door near the office, a warehouse service door, a glowing blue emergency control terminal inside/near the office area, a small gold emergency-log fragment, and a small pale maintenance note near the service/underground area. Include one small dark metallic spherical security drone that patrols a rectangular route in the middle/far part of the district.

The core gameplay is a single mission called “FIND THE EMERGENCY CONTROL ROOM.” Show it in a translucent dark HUD panel at upper-left with a checklist of these objectives, in order: Enter the main district; Explore the abandoned office building; Find the access card; Use the access card; Enter the security section; Find the emergency control room; Inspect the control system; Recover the first major clue; Return to the designated checkpoint. The player starts around the main street/checkpoint and the first objective completes when moving into the district. Exploring near the office completes the office objective. The office security door must reject interaction with the message “ACCESS DENIED — Security card required” unless the player has “Security Access Card A”; when opened with the card, mark both card-use and security-entry objectives complete and reveal the security area. Preserve the intended inventory item named “Security Access Card A” (even if the original placement is minimal), and make it obtainable through an interactable pickup in the office/district so the mission is completable. The glowing emergency control terminal should refuse access until the security section is opened; afterward, interacting with it completes “Find the emergency control room” and “Inspect the control system,” increases the office and emergency light intensity, and displays “Emergency control system responding.” The emergency-log fragment is collectible, disappears after pickup, adds “Emergency Log Fragment” to the inventory, completes the clue objective, and displays “MAJOR DISCOVERY: the evacuation timeline was altered.” The maintenance note is an optional collectible titled “Maintenance Note,” added to inventory without a required objective. The warehouse door can be opened/closed by interaction without an access requirement, matching the existing simple door behavior. At the blue checkpoint, interaction completes the return objective, saves progress, and displays “Checkpoint reached — progress saved.” Completing all objectives should display “MISSION COMPLETE — Chapter 1: Arrival.”

Use simple proximity interaction: when the player is within roughly 2.3 world units of an interactable, show a centered bottom prompt such as “[E] Interact,” “[E] Open door,” or “[E] Locked door.” The player moves with WASD or arrow keys, can sprint with Shift, jump with Space, interact with E, toggle the inventory with I, and pause with Escape. Include touch/mobile support with a virtual joystick and buttons for JUMP, USE, RUN, and BAG. Include a pause overlay with Resume, Save Game, Load Game, and Reset Save buttons. Persist player position, inventory, mission progress, story flags, discovered areas, and time in local storage; support explicit save/load/reset behavior.

The HUD should have a top-centered title bar reading “OPERATION: ZERO ZONE — DISTRICT 07,” the mission panel at upper-left, and an inventory panel at lower-right listing item names and quantities or “Empty.” Include small control help text along the lower-left: “WASD / arrows move · Shift sprint · Space jump · E interact · I inventory · M map · Esc pause” (even if no separate map functionality is implemented). Use dark translucent glass-like panels with thin blue-gray borders, pale text, blue section headers, green checked objectives, and toast notifications centered near the top.

Create a dynamic 240-second day/night cycle: vary the directional sunlight and hemisphere light, transition the fog/background between near-black blue night and muted blue-gray daylight, and make office/emergency lights stronger at night. Continuously render about 500 subtle blue-gray rain particles over the district. The security drone patrols four waypoints; when the player comes within 7 units, switch it to ALERT, make its red emissive glow brighter, and periodically show “SECURITY ALERT — break line of sight.” Otherwise it remains in PATROL with a dim red emissive glow. There is no combat, health, ammo, scoring, or enemy attack system: the focus is navigation, proximity interaction, collecting investigation items, unlocking the office, examining the control system, avoiding the alert drone, and returning to the checkpoint.