Flappy Bird

Basic gameplay:

The player presses/taps to make the bird "fly up" for a beat, and when not pressed, the bird will be affected by gravity → fall down.

On the flight path, there are tubes/columns built at fixed or random distances, the player needs to avoid touching the tubes, if touched → game over.

The game has a score that increases according to the number of tubes passed.

This project helps you learn how to build a simple 2D side-scroller game, obstacle avoidance flight logic, score calculation, UI, and build multi-platform radar (mobile/web).

YouTube

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🧠 Technology & Techniques Used

Main Technology

Engine: Unity (2D side-scroller)

GitHub

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Programming Language: C# (mainly for input processing, character movement, collision logic, score)

gitstar-ranking.com

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Sprite & Graphics: use sprites for bird characters, pipes, background — create a classic 2D game feel.

Game-mechanics:

Input (press/tap to “flap” the bird to fly up)

Gravity and velocity/character movement

Spawn and move obstacles (pipes) from right to left or the player flies forward.

Collision detection: check when the character hits a pipe or falls off the screen → end the game.

UI & Score: Display current score, display “Game Over” screen when losing, possibly “Play Again” button.

Build target: Mobile (touch) and possibly Web/PC — helps learn how to set up inputs and build cross-platform.

Featured techniques

Create a pipe spawner system with prefab for reuse, set spacing/random for increased difficulty.

Create a parallax background movement effect — can be guided in Zigurous' video tutorial.

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Simple but effective logic to learn: not too complicated, but enough to understand making 2D games in Unity.

The project structure is clear and easy to extend: you can add features like “power-up”, “multiplayer”, “character change”… from here

⚙️ Installation and testing instructions

1️⃣ Download the project

git clone https://github.com/zigurous/unity-flappy-bird-tutorial.git

Or download the ZIP file from GitHub.

GitHub

2️⃣ Open in Unity

Open Unity Hub → select “Add project” → point to the downloaded folder.

Use the appropriate Unity version (see the README file in the repo for the recommended version).

3️⃣ Test run

Open the main Scene from the Assets/Scenes folder (or equivalent) in the project.

Press Play in Unity Editor to try it out: you will control the bird, press/tap to fly, avoid pipes and watch the score increase.

4️⃣ Build & Publish (optional)

Go to File → Build Settings → select the desired Platform (WebGL, Android, iOS, PC).

Set resolution, aspect ratio, input (touch or keyboard) if needed.

Click Build & Run to publish the test version.

💡 Highlights & Extensions

Highlights

Simple but addictive 2D side-scroller game: “flying to avoid pipes” — suitable for learning and entertainment.

Open source, easy to access and learn.

Logical guidance from start to finish: from project setup, sprite import, input, motion, UI – video tutorial included.

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Expansion suggestion

Add more types of pipes/obstacles: move, rotate, change position randomly more.

Add power-ups: bird characters can pick up bonuses like “fly fast”, “reduce gravity”, “shield”.

Support multiple characters/birds with different skins.

Added online leaderboard/High score for players to compare scores with others.

Improved graphics & effects: added particles when hitting pipes or reaching high scores, added background music/sounds.

Added limited time mode, or rounds with increasing difficulty.