How to create a game on Android yourself from scratch - just a smartphone and an idea

Creating a mobile game on Android from scratch directly on your phone is not a myth, but a reality that is accessible even to a beginner. Many people think that development requires a powerful computer, expensive software and years of programming training. In fact, a smartphone with Android 8.0+sufficiency, several free applications and a couple of hours of free time are enough. In this article we will analyze the entire process from idea to publication of the game in Google Play —without complex terms and unnecessary costs.

The main advantage of developing on a phone is mobility. You can work on a project in public transport, during a break, or even while lying on the couch. Of course, this approach has limitations: the screen is smaller than a monitor, and the performance of a smartphone is inferior to a PC. But for simple 2D games (arcades, puzzles, platformers) this is enough. We'll focus on tools that don't require root access, are suitable for most modern devices, and allow you to create a game from scratch in a few days.

It's important to understand: your first game is unlikely to become a hit with a million downloads. But this is not the goal. Task — learn the basics of game design, understand the development logic and get a working product that you can share with friends or add to your portfolio. And then - improve, try new mechanics and, perhaps, monetize your hobby. Ready to get started? Then let's start preparing.

1. Preparation: what you need to create a game on your phone

Before you start developing, make sure your smartphone meets the minimum requirements. For comfortable work you will need:

• 📱 Android 8.0 Oreo or later (many tools do not work on older versions)
• 🔋 Battery charge not lower than 50% (development consumes a lot of energy)
• 📶 Stable Internet (for downloading engines and assets)
• 🎮 Free space 1–2 GB (for installing software and storing projects)
• 🖥️ Screen from 5.5 inches (on small displays it is inconvenient to work with the editor interface)

If your device is rather weak (for example, Redmi 5A or Samsung Galaxy J4), do not be discouraged. You can optimize the process: close background applications, use lightweight versions of engines, and test the game on an emulator inside your phone. The main thing is not to try to create an open world 3D shooter. Start with a simple 2D games like "Snake", "Flappy Bird" or a quest with minimalist graphics.

Also prepare:

• 📝 Notepad or document in Google Keep to record ideas and mechanics
• 🖌️ Simple graphic editor (for example, PicsArt or Ibis Paint X)
• 🔊 Sound generator (can be used Zedge or BFXR for retro effects)
• 📁 Cloud storage (for example, Google Drive) for project backups

⚠️ Attention: If you plan to publish the game in Google Play, register a developer account in advance (cost - $25 one-time). Without it, the application cannot be downloaded. An alternative is to distribute the game through an APK file (for example, in a Telegram channel or on forums).

2. Choosing an engine: which game designer is suitable for a phone

A game engine is a app in which the game is created: levels are drawn, logic is written, sounds are added. There are only a few solutions suitable for development on a smartphone. We will look at the three most affordable and functional options that do not require connection to a PC.

Engine	Complexity	2D/3D support	Programming language	Free?
GDevelop	⭐⭐☆☆☆	2D	Visual programming (no code)	Yes
Godot Engine (mobile version)	⭐⭐⭐☆☆	2D and 3D	GDScript (similar to Python)	Yes
Unity (via Unity Hub on the phone)	⭐⭐⭐⭐☆	2D and 3D	C#	Conditionally (free for beginners)

For absolute beginners, the best choice is GDevelop. This is a constructor with a drag-and-drop interface, where the game logic is assembled from ready-made blocks (as in Scratch). You can create a simple game without a single line of code. Disadvantage: limited options for complex projects.

If you are ready to learn, try it Godot. It is a full-fledged open source engine that supports both 2D and 3D. It works on the phone via the web version or unofficial ports (for example, Godot for Android v F-Droid). The language is simpler than on the phone - an option for experienced users. Officially Unity does not support mobile development, but it can be used GDScript easier than C# V Unity, but will require learning the basics of programming.

Unity on the phone - an option for experienced users. Officially Unity does not support mobile development, but it can be used Unity Hub via a remote desktop (for example Chrome Remote Desktop) or terminal (Termux). It's complicated, but it gives you access to the most popular game engine.

3. Installing and configuring the engine on the phone

Let's look at the step-by-step installation using an example GDevelop —the simplest option for beginners. If you choose another engine, the principles will be similar, but adjusted for the interface.

1. Download GDevelop from Google Play or from official website (APK file). Make sure you have enough space on your device.

2. After installation, open the application and allow access to the storage (needed to save projects).

3. In the main menu, click New Project → select a template (for example, Empty Game for an empty project or Platformer for a ready-made platformer).

4. Customize the interface: enable Touch Controls in the project settings (otherwise the game will not be controlled on the phone).

Now briefly about the settings Godot:

• 📥 Download APK from F-Droid or compile from source (instructions are available at GitHub).
• 🔧 When you first start, select New Project → specify the folder to save (preferably to an SD card).
• 🎨 In the project settings (Project Settings) disable 3D, if you do 2D game - this will save resources.

⚠️ Attention: On weak phones (for example, with a processor Snapdragon 4xx or 2 GB of RAM) Godot may slow down. In this case, reduce the preview resolution in the editor settings or use GDevelop.

4. Development of game mechanics: from idea to prototype

Before drawing levels, decide on the main mechanics game. This is what makes her unique. For example:

• 🐍 In "Snake" the mechanics are the growth of a snake when eating food.
• 🕊️ In "Flappy Bird" - flying between pipes by pressing.
• 🧩 In "2048" - merging identical numbers when swiping.

Formulate your mechanics in one sentence. For example: "The player controls a ball, which must collect stars and avoid traps by jumping on platforms". Then break it down into parts:

1. Controls: how the player interacts with the game (taps, swipes, gyroscope).
2. Physics: as objects move and collide (gravity, bounces).
3. Goals: what needs to be done to win (score points, reach the finish line).
4. Obstacles: what interferes with the player (enemies, timer, limited life).

In GDevelop mechanics are collected from events (events). For example, for a character to jump when tapping:

Condition: Touch is pressed on "JumpButton"
Action: Apply force to "Player" (Y = -500)

In Godot the same jump is registered on GDScript:

func _input(event):
if event is InputEventScreenTouch and event.pressed:
velocity.y = -500 # Jump strength

Example code for character movement in Godot

Hidden text with the full platformer movement script, including collision handling and gravity.

Don't try to make perfect mechanics right away. First create prototype a rough version with cubes instead of graphics. The main thing is that the game is playable. Then you can replace the temporary sprites with beautiful pictures.

5. Design and graphics: how to make a game visually attractive

Graphics are 50% of the success of a mobile game. Fortunately, professional artist skills are not required to create it. It is enough to follow a few rules:

• 🎨 Style: choose one style and stick to it. For beginners, the easiest way is pixel graphics (as in retro games) or minimalism (geometric shapes).
• 👁️ Contrast: game objects should be clearly distinguishable from the background. For example, a red character on a green background is visible better than a gray character on a gray one.
• 📏 Resolution: optimize sprites for smartphone screens. Standard - 1080×1920 (Full HD), but you can also use 720×1280 to save resources.

Where to get graphics for the game:

Source	Content type	Free?	Attribution required?
Kenney.nl	Sprites, backgrounds, sounds	Yes	No (CC0)
OpenGameArt.org	2D/3D assets	Yes	Depends on the license
Piskel (web)	Pixel graphics editor	Yes	No
Ibis Paint X (Android)	Drawing sprites	Conditionally (advertising)	No

If you decide to draw yourself, start with simple shapes. For example, the character can be round (as in "Agar.io"), and the platforms can be rectangles. For animation, use sprite sheets (sequence of frames in one image). GDevelop i Godot have built-in tools for cutting animations.

Don't forget about UI (interface): menu buttons, score counter, health bars. They should be noticeable, but not distract from the gameplay. In GDevelop there are separate objects for the UI (Text, Button), in Godot there are nodes like Label and TextureButton.

6. Sound and music: how to add atmosphere to the game

Sound makes the game more alive. Even simple effects (jumping, collecting a coin, losing) significantly improve the experience. Suitable for mobile development:

• 🔊 8-bit sounds (retro effects, like in old consoles)
• 🎵 Short melodies (30–60 seconds in a cycle)
• 🎚️ Ambient (background noise, for example, wind or city noise)

Where to get sounds:

• 🎧 BFXR (Android) - generator of retro sounds for games.
• 🎼 Zedge - free ringtones and sound effects (check license!).
• 🎻 Freesound.org —a sound database licensed under Creative Commons.
• 🎹 BeepBox (web)—a simple editor for creating chiptune melodies.

In GDevelop sounds are added through an object Audio:

1. Import the file (format .mp3 or .wav).
2. Create an event: Play sound "jump.wav" when "Player" jumps.
3. Adjust volume and looping in the object properties.

U Godot use node AudioStreamPlayer:

# In the character script
func _ready():
$AudioStreamPlayer.play() # Play sound when loading

⚠️ Attention: Excessively loud or intrusive sounds irritate players. Test the game with the sound at maximum volume - if it hurts the ears, reduce the level in the project settings.

7. Testing and debugging: how to find and fix errors

Testing is a mandatory step that many beginners skip. Without it, the game may crash, slow down, or contain critical bugs. Start by doing it yourself. testing self-testing:

• 🕹️ Check all mechanics: controls, collisions, scoring.
• 🔄 Test the game on different devices (if possible).
• 📱 Make sure the game works correctly in landscape and portrait orientation.
• 🔋 Keep an eye on battery consumption: if the game drains your phone in 30 minutes, optimize graphics.

Common mistakes of beginners and how to fix them:

Problem	Possible cause	Solution
Game slow	Too many objects on the screen	Reduce the number of sprites, optimize the code
The character falls through platforms	Incorrect collision settings	Check Collision Mask in object properties
Sound does not play	Inappropriate file format	Convert in .ogg or .wav
The game crashes on startup	Error in the code or lack of memory	Check error logs, reduce textures

To search for bugs in GDevelop use Debugger (enabled in project settings). Errors are displayed in the console (in the bottom panel). If you can’t figure it out, describe the problem on the forums (for example, Godot errors are output to the console (Output in the bottom panel). If you can’t figure it out, describe the problem on the forums (for example, Reddit/r/gamedev or Godot Engine Community).

After fixing the errors, invite friends or friends to play your game. Record their reactions: what they like and what annoys them. Often, strangers notice problems that you missed.

8. Publishing a game: how to upload it to Google Play or share the APK

When the game is ready, it’s time to share it with the world:

1. Publishing on Google Play — official method, but requires registration of a developer account ($25 one-time).
2. APK distribution - free, but less secure for users (you need to allow installation from unknown sources).

Instructions for Google Play:

1. Register a developer account on Google Play Console.
2. Prepare icon (512×512 px), screenshots (minimum 2), description (in Russian and English).
3. Collect APK or AAB (Android App Bundle) in your engine.
4. Fill out the form in Play Console: indicate category, age rating, privacy policy (you can generate on privacypolicytemplate.net).
5. Upload the build and send for moderation (usually takes 1-3 days).

If you do not want to pay for a developer account, distribute the game via APK:

• Collect the file in the engine (Export → Android).
• Upload it to the cloud (Google Drive, Dropbox) or send directly via messenger.
• Ask users to enable Installation from unknown sources in Android security settings.

⚠️ Attention: Distributing an APK outside Google Play is fraught with Android security warnings. To avoid this, sign the file using Uber APK Signer (a free application for Android).

After publishing, do not forget to support the game: fix it bugs, add new levels, listen to player feedback. Even a simple game can become popular if it is regularly updated.

FAQ: Frequently asked questions about creating games on Android

Is it possible to create a 3D game on a phone?

Technically, yes, but it is extremely difficult. Godot i Unity support 3D, but the phone does not have enough power or convenience to work with models, textures and lighting. Start with 2D, but for. 3D use a PC.

How long does it take to create the first game?

A simple game (like Pong or Snake) can be made in 2-5 days, if you devote 2-3 hours a day. More complex projects (a platformer with 10 levels) can take several weeks.

Do you need to know programming?

No, if you use GDevelop or Construct (visual programming). But knowing the basics GDScript (for Godot) or C# (for Unity) will open up more opportunities.

Is it possible to make money on a game created on a phone?

Yes, but it is unlikely that the first game will bring in much income. The main methods of monetization: advertising (AdMob), paid downloads (ineffective) or donations. Most indie developers make money from several games, not just one.

How to transfer a project from a phone to a PC?

Copy the folder with the project to the PC (via cable or cloud) and open it in the desktop version of the engine. B GDevelop and Godot projects are fully compatible between mobile and PC versions.