What is Unity?

Unity is a powerful cross-platform game engine and development environment used to create 2D and 3D games, simulations, and interactive experiences. Developed by Unity Technologies, it supports deployment to over 25 platforms including mobile devices, desktops, consoles, and VR/AR devices.

Key Features

  • Cross-Platform Development: Build once, deploy everywhere
  • Visual Editor: Intuitive drag-and-drop interface
  • Asset Store: Marketplace for ready-made assets and tools
  • C# Scripting: Powerful programming language support
  • Real-time Rendering: Advanced graphics and lighting systems
  • Physics Engine: Built-in 2D and 3D physics simulation

Unity Script Example

                    
using UnityEngine;

public class PlayerController : MonoBehaviour
{
    public float speed = 5.0f;
    public float jumpForce = 10.0f;
    
    private Rigidbody rb;
    private bool isGrounded;
    
    void Start()
    {
        rb = GetComponent<Rigidbody>();
    }
    
    void Update()
    {
        // Movement
        float horizontal = Input.GetAxis("Horizontal");
        float vertical = Input.GetAxis("Vertical");
        
        Vector3 movement = new Vector3(horizontal, 0, vertical);
        transform.Translate(movement * speed * Time.deltaTime);
        
        // Jumping
        if (Input.GetKeyDown(KeyCode.Space) && isGrounded)
        {
            rb.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
            isGrounded = false;
        }
    }
    
    void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.CompareTag("Ground"))
        {
            isGrounded = true;
        }
    }
}

Unity Development Workflow

  1. Project Setup: Create new Unity project and configure settings
  2. Scene Design: Build game environments using GameObjects
  3. Asset Import: Import 3D models, textures, and audio files
  4. Scripting: Write C# scripts for game logic and behavior
  5. Testing: Use Play mode to test gameplay mechanics
  6. Build & Deploy: Compile and deploy to target platforms

Popular Unity Games

  • Pokémon GO
  • Hearthstone
  • Ori and the Blind Forest
  • Monument Valley
  • Cuphead