Ultimate Mobile 3D Game Development Benchmark

Prompt

ULTRATHINK — BUILD A COMPLETE, PLAYABLE, MOBILE-FIRST 3D SANDBOX RPG GAME. You are a senior game engine developer, gameplay programmer, technical artist, and mobile optimization engineer. OBJECTIVE: Create an original 3D sandbox RPG that runs in a modern Android browser. Prioritize working gameplay, responsive controls, coherent visuals, and stable performance. OUTPUT: Produce the complete implementation, preferably as a single index.html file containing HTML, CSS, and JavaScript. Use Three.js for 3D rendering if external dependencies are permitted. Clearly document all dependencies. Do not return pseudocode, partial snippets, mockups, or a tutorial instead of the actual implementation. GAME WORLD: - A navigable 3D environment. - Terrain, trees, rocks, ruins, and water. - Atmospheric lighting and fog. - Multiple resource types. - Interactive objects. - Day/night cycle if performance allows. PLAYER: - Third-person camera. - Smooth movement and camera rotation. - Jumping, sprinting, and dodging. - Collision detection. - Health and stamina. - Inventory and equipment. - Local save/load functionality. COMBAT: - Melee weapons. - Enemy health and damage. - At least three enemy behaviors. - Enemy pursuit and attack logic. - Loot drops. - One boss encounter. - Combat feedback and damage indicators. PROGRESSION: - Resource gathering. - Crafting. - Equipment upgrades. - At least three playable quests. - NPC dialogue. - Experience and character progression. MOBILE CONTROLS: - Virtual joystick. - Touch camera control. - Dedicated attack, jump, dodge, and interact buttons. - Responsive landscape layout. - Large touch targets. - No requirement for a physical keyboard. VISUAL QUALITY: - Cohesive art direction. - Detailed materials. - Dynamic lighting where practical. - Particles and combat effects. - Responsive animated UI. - Smooth camera transitions. - Avoid a static scene or primitive-only presentation. PERFORMANCE: - Target 30 FPS on supported mid-range mobile devices. - Aim for 60 FPS on capable devices. - Use efficient rendering, object pooling, instancing, and level-of-detail techniques where appropriate. - Provide scalable graphics settings. - Prevent memory leaks and unnecessary allocations. ENGINEERING: - No missing functions. - No nonfunctional buttons. - No broken event listeners. - No game-breaking collision bugs. - Correct window resizing. - Proper orientation handling. - Working pause, restart, and save systems. - Avoid console errors. - Ensure that all implemented systems are connected to actual gameplay. DELIVERY REQUIREMENTS: 1. Return the complete source code. 2. Explain how to launch it on Android. 3. List external dependencies. 4. Include a functional testing checklist. 5. Clearly identify any simplified features. 6. Never claim that unimplemented features work. CONSTRAINT: If the entire scope cannot be implemented reliably in one file, reduce the scope intelligently and deliver a smaller, genuinely playable game. Prioritize a complete, working game over an impressive but nonfunctional feature list.