How To Make Zombie Ai In Unity

Unity is an influential game development platform that enables creators to build compelling and interactive games. Among the most favored game genres is the zombie apocalypse, in which participants are tasked with battling legions of zombie foes. In this piece, we’ll explore the process of crafting zombie AI within Unity.


Before we begin, it’s important to understand what AI (Artificial Intelligence) is and why it’s important in game development. AI refers to the ability of a computer program to make decisions and perform tasks that are typically associated with human intelligence. In the context of game development, AI is used to control non-player characters (NPCs) such as enemies, allies, and other entities.

Creating Zombie AI in Unity

To create zombie AI in Unity, we will follow these steps:

  1. Create a new project in Unity and import the necessary assets.
  2. Create a new C# script called “ZombieAI” and attach it to the zombie game object.
  3. In the ZombieAI script, create variables for the zombie’s speed, health, and target distance.
  4. Add the following methods to the ZombieAI script:
    • Update() – This method is called every frame and is used to update the zombie’s position and rotation based on its speed and direction.
    • OnTriggerEnter() – This method is called when the zombie collides with another object. We will use this method to detect if the zombie has reached its target distance and attack the player.
  5. In the Update() method, add the following code:
  6.       // Get the direction of the player's position relative to the zombie's position.
          Vector3 dir = transform.position - target.transform.position;
          // Normalize the direction vector.
          // Move the zombie towards the player at its speed.
          transform.Translate(dir * speed * Time.deltaTime, Space.World);
  7. In the OnTriggerEnter() method, add the following code:
  8.       // Check if the zombie has reached its target distance.
          if (Vector3.Distance(transform.position, target.transform.position) <= targetDistance) {
            // Attack the player.


In conclusion, creating zombie AI in Unity is a fun and challenging task that requires a good understanding of C# programming and game development concepts. By following the steps outlined in this article, you can create your own zombie AI and add it to your game project.