Building an Endless Runner Game with Unity: Procedural Levels and AI Eagles

Who doesn't know endless runner games? From Temple Run to Subway Surfers, this genre has become one of the most iconic in mobile gaming. Simple mechanics — run, dodge, collect — yet endlessly addictive. But what if we could build one from scratch? This project is exactly that: creating a fully functional endless runner in Unity with C#, complete with procedural level generation, a collectible coin system, and an AI-driven eagle that hunts the player using a leader-follower behavior pattern.

Main Concept of the Game

The player runs automatically — the only control is dodging obstacles and collecting coins.
The level is procedurally generated at runtime, so it never ends and never repeats.
Old level sections are destroyed behind the player to keep memory clean.
An AI eagle system (leader + followers) chases the player dynamically.
The game ends when the player collides with an obstacle.
Distance traveled is tracked as the primary score metric.

Technology Used

This project is built entirely inside Unity with C# scripts organized into modular, single-responsibility components:

Engine: Unity
Language: C#
Paradigm: Object-Oriented Programming (OOP), Interface-based design

No external libraries required — just Unity Engine and pure C#.

Project Repository

The full source code is available on GitHub. Feel free to view, download, or develop it further.

Bash

git clone https://github.com/Afrizal236/Unity-Endless-Game-Runner.git

Video Implementation

Here's a quick demo of the game running in Unity, showcasing the procedural level generation, coin collection, and the AI eagle chasing the player:

How to Run

Open the project in Unity Hub
Load the main scene
Click the Play button
Use the controls to move the character

Further Development Ideas

This project is a solid foundation for a more complete game. Some features that could be added later:

Score UI and leaderboard system.
Sound effects and background music.
Improved visuals and polished assets.
Gesture or AI control integration.
Weapon or power-up system for added interactivity.

Building a game from scratch is one of the most effective ways to master software architecture, AI logic, and real-time systems all at once. Feel free to explore the project, run it in Unity, and extend it however you like.