City Builder Template

🏙️ Grid City Builder – Mobile-Optimized Unity Template

Build, expand, and simulate your own living city with a powerful, fully optimized grid-based city builder system designed specifically for mobile performance.

This asset gives you everything you need to create a complete city-building experience, from intelligent placement systems to dynamic traffic simulation, all wrapped in a clean and scalable architecture.

🚀 Overview

Grid City Builder is a complete Unity template built for developers who want to create mobile city-building games quickly and efficiently.

With a strong focus on performance, scalability, and modular design, this system allows you to construct cities using roads, buildings, and zones while maintaining smooth gameplay even on low-end devices.

It combines intuitive gameplay mechanics with advanced backend systems like optimized grid logic, AI traffic streaming, and compressed save/load systems.

🧩 Core Features

🏗️ Grid-Based Building System

• Fully functional grid placement system with precise snapping
• Supports multiple building types:
  Houses
  Roads (with drag-based placement)
  Scalable buildings (variable sizes)
• Smart validation ensures:
  No overlapping objects
  Accurate placement feedback
• Real-time ghost preview system with valid/invalid indicators

🏙️ Zoning System

• Quickly paint entire areas with zones:
  Residential
  Commercial
  Industrial
• Automatically populate zones with appropriate buildings
• Ideal for rapid city expansion mechanics

🚗 Advanced Traffic System (Highly Optimized)

• Fully grid-based traffic simulation
• Cars follow structured paths and:
  Never overlap
  Maintain spacing intelligently
• Includes:
  Road traffic (cars, vans)
  Water traffic (boats)
• Lightweight directional path system instead of heavy pathfinding
• Dynamic spawning based on camera proximity for performance

💾 Powerful Save & Load System

• Complete city persistence system
• Saves:
  All buildings
  Roads
  Layouts
  Rotations and sizes
• Uses optimized bit-packing compression for minimal storage
• Instantly reconstructs the entire city exactly as it was

🔄 Demolishing System

• Remove any structure dynamically
• Automatically frees grid space
• Fully integrated with placement and save systems

⚡ High Performance Architecture

Built from the ground up for mobile:

• Uses Non-Alloc physics checks (no garbage memory)
• Array-based systems instead of dynamic lists
• Efficient grid occupancy tracking
• Distance-based AI spawning/destruction
• Optimized update cycles using coroutines

🎮 Smooth & Modern UI System

🎵 Centralized UI Audio (ButtonPlayer)

• One system controls all UI sounds
• No need to assign audio per button
• Clean hierarchy and lower memory usage

🪟 UI Management Tools

• Toggle systems for panels and menus
• Notice system for popups and UI states
• Fully automated button binding

✨ Smooth UI Transitions

• Animated menu transitions using interpolation
• Professional feel with sliding UI panels
• Coroutine-based animations for performance

🎥 Mobile Camera System

• Designed for touch devices:
  One finger → Pan
  Two fingers → Zoom & rotate
• Switch between:
  Perspective mode (cinematic)
  Orthographic mode (precise building)
• Camera bounds and locking system included
• Saves player preferences automatically

🧠 Smart Building Logic (Block System)

Each building intelligently:

• Detects nearby:
  Roads
  Water
  Power
• Displays missing service indicators
• Updates automatically over time
• Includes smooth “grow” animation on placement

🧪 Debug & Developer Tools

• Real-time grid visualization
• Placement validation highlighting
• Occupied cell tracking
• Editor gizmos for debugging

🎨 Optimized Assets

• Low-poly models optimized for mobile
• Efficient textures (PNG, 512x512)
• Clean and scalable asset structure
• Designed to minimize draw calls and overdraw

⚙️ Easy Integration

• Simple setup with clear workflow
• Modular scripts for easy customization
• Expand with your own:
  Buildings
  Systems
  Gameplay mechanics

🎯 Perfect For

• Mobile city builder games
• Simulation and tycoon games
• Base-building systems
• Strategy and management games

💡 Why Choose This Asset?

• Built specifically for mobile performance
• Complete system, not just a prototype
• Clean, scalable, and well-structured codebase
• Ready to extend and customize
• Saves months of development time

📦 What You Get

• Full grid-based city building system
• Advanced traffic simulation (road + water)
• Zoning and placement tools
• Save/load system
• UI system with animations and audio
• Mobile camera controller
• Optimized models and textures
• Developer tools and debug systems