Mobile gaming today is an industry with billions of dollars in turnover, where every developer can find his niche. Creating a game on Android has ceased to be the lot of select programmers with an academic education. Modern tools allow beginners to bring their ideas to life using visual scripts or familiar programming languages.
However, before diving into coding, it is important to understand that development is not only creativity, but also strict logic. You have to go from idea and choice game engine to testing on real devices and publication in the store. This process requires patience, but the result in the form of a working application on thousands of smartphones is worth it.
In this article we will analyze the key stages of creating a mobile project. We will not delve into complex mathematical formulas, but will focus on practical steps that will help you launch your first prototype.
Selecting a game engine and tools
The first and most critical step is choosing game engine (Game Engine). This is a software environment that takes care of graphics rendering, physics processing and sound management. The complexity of development and the final size of your application depend on this choice.
Solutions with visual programming, where logic is built from blocks, are great for beginners. More experienced developers often choose powerful platforms with support C# or C++. The popularity of a particular tool often depends on the type of game: for 2D platformers there are some solutions, for 3D shooters - completely different.
- 🎮 Unity - the most popular engine in the world, the perfect balance between power and simplicity.
- 🧩 Godot - lightweight, completely free open source engine.
- 🚀 Construct 3 - works directly in the browser, does not require installation or knowledge of code.
- 📱 Defold is an excellent choice for creating lightweight 2D games with high performance.
It is worth noting that some engines require powerful computer for comfortable work. If you have a weak laptop, pay attention to Godot or web-based solutions. It is also important to check the licensing policy: some platforms take a percentage of profits only after reaching a certain income threshold.
⚠️ Attention: Interfaces and system resource requirements of game engines are frequently updated. Before downloading, be sure to check the minimum system requirements on the official website of the software developer.
Setting up the development environment and SDK
After installing the engine, you need to prepare the environment for assembling the project specifically for the platform Android. The engine itself cannot create .apk or .aab files without additional components from Google.
You will need to install Android SDK (Software Development Kit) and JDK (Java Development Kit). These tools contain the compilers and libraries needed to translate your project into a format that the phone's operating system can understand. In most modern engines, such as Unity, this process is automated through the module Android Build Support.
The setup process may seem confusing if you are doing it for the first time. You must correctly specify the paths to the installed components in the project settings. An error in one character of the path may result in the build button being inactive.
☑️ Preparing the environment
Also at this stage it is worth connecting a physical device for tests. Emulators are often slow and do not reflect actual game performance. Connect your smartphone via USB, enable USB debugging in the developer menu and check the connection.
adb devicesThis command in the terminal will show a list of connected devices. If you see your phone's serial number, the environment is ready to go. If not, check the drivers and cable.
Basics of programming game logic
The heart of any game is its code. Even if you use visual scripts, you are essentially programming, just in a different form. The logic of the game describes how the character reacts to clicks, how points are awarded and what happens when objects collide.
In Unity the main language is C#. You will need to create scripts that attach to game objects. For example, a character control script will contain methods Update(), executed every frame, and Start(), launched once when an object appears.
- 🧠 Variables — store data: health, number of coins, speed.
- 🔄 Cycles and conditions — define behavior: “if health is 0, then the game is over.”
- 🎯 Functions - blocks of code that perform specific actions, for example, a shot.
Don't try to write the whole game at once. Start small: make the cube move across the screen when you press the arrows. Then add an obstacle that stops the cube. Increasing the project's complexity over time is the key to success.
Use Git version control from the very beginning of the project. This will allow you to roll back changes if you accidentally break a working mechanic, and not lose days of work.
It is important to understand the difference between client and server logic. If you are making an online game, critical calculations (for example, issuing rewards) must occur on the server, and not on the player’s phone, otherwise your game will be easily hacked.
Working with graphics, sound and interface
The visual component is the first thing the user sees. The graphics do not have to be photorealistic; the main thing is that it be stylistically unified. You can use ready-made assets from stores or draw your own sprites in Photoshop or Aseprite.
Optimizing graphics for mobile devices is critical. Smartphone screens have high resolution, but battery and processor resources are limited. Using textures that are too large (for example, 4096x4096 for a small icon) will lead to rapid battery drain and slowdowns.
| Resource type | Recommended format | Features |
|---|---|---|
| 2D Sprites | PNG (with transparency) | Use sprite atlases |
| 3D Models | FBX / OBJ | Minimize the number of polygons |
| Sounds (SFX) | WAV / OGG | Short sounds in memory, long ones in a stream |
| Music | OGG / MP3 | Mandatory compression to save space |
Sound creates an atmosphere. Even a simple game sounds more expensive with high-quality effects. Don't forget about the user interface (UI). Buttons on a touchscreen should be large enough to be easily pressed with a finger rather than a stylus.
⚠️ Attention: When using someone else's graphics or music, carefully check the license. Many free assets are permitted for non-commercial use only.
What is a Sprite Atlas?
A Sprite Atlas is one large image file containing many small pictures (sprites). This allows the engine to load one texture instead of hundreds of small ones, which significantly speeds up the game and saves RAM.
Testing and performance optimization
Testing is the stage at which the game turns from a set of bugs into a working product. On a PC, everything can fly, but on an old smartphone the game can produce 5 frames per second. Your task is to provide stable framerate (FPS) on a wide range of devices.
Use the engine's built-in profilers. They will show what exactly is slowing down the game: complex physics, heavy textures or unoptimized code. Often the problem lies in the creation of unnecessary objects in the loop, which causes “garbage collection” and micro-freezes.
Test the game on different versions Android. What works on a fresh system may fail on devices that are three years old. Pay special attention to memory: mobile OS hard.kill applications that consume too much RAM.
Optimization for weak devices is more important than beautiful graphics on flagships. Your audience is millions of users with the average budget segment of smartphones.
Do not forget about ease of management. Test the game in different positions: vertical and horizontal. Make sure that the player's fingers do not block important gameplay elements on the screen.
Publishing on Google Play and monetization
The final stage is reaching the players. To publish in Google Play you will need to create a developer account. This is a paid service: you must pay a one-time registration fee (usually about $25), after which the account remains with you forever.
The publishing process includes filling out the application card: description, screenshots, icon and content classification. Google carries out moderation, which can take from several hours to several days. It is important to follow the store rules, otherwise your account may be blocked.
- 💰 Advertising —banners and videos for a fee.
- 🛒 In-game purchases —selling currency, skins or turning off advertising.
- 💎 Paid model —sale of the game itself for a fixed price.
To connect payments and advertising, you will need to integrate the appropriate SDK (for example, AdMob or Unity Ads). You also need to set up signing your application with a release key. Never lose your signing key (keystore)since without it you will not be able to update your application in the future.
keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000This command generates a signing key. Keep the file .keystore and its passwords in a safe place, preferably in several copies. Losing the key means the death of the project for updates.
How much does it cost to create a Google developer account?
Registering a developer account in the Google Play Console costs $25. This is a one-time payment that does not need to be renewed annually.
Do you need to know programming to make a game?
No, it is not necessary. There are engines with visual programming (Construct 3, GDevelop), where the logic is built from blocks. However, knowledge of the basics of algorithms will help you create more complex projects.
Is it possible to make money on your first game?
The chances are low, since the market is oversaturated. The first game is a learning project. Real income usually comes from experience, marketing and the quality of subsequent releases.
Which programming language is best for Android games?
For Unity, C# is the best choice. For native development for Android, Kotlin or Java is used. For the Godot engine, you can use GDScript (similar to Python) or C#.