What to write games for Android: choosing an engine

Creating a mobile game is an exciting, but technically complex process that requires the right choice of tools. The market Android is huge and fragmented, which confronts the developer with the task of optimizing for thousands of different device configurations. The choice of game engine directly affects not only the performance of your project, but also the speed of its entry into the market, as well as the support budget.

Many beginners mistakenly believe that it is enough to simply learn one programming language. In reality, you will have to understand graphics rendering, physics, working with memory and specifics Google Play. We will analyze in detail the main platforms that allow you to create interactive applications and help you understand which technology stack will suit your needs.

The choice between cross-platform solutions and native development often becomes a decisive factor for success. If you plan to release a hit on iOS and Android at the same time, then the native approach may be too expensive and time consuming. However, if your goal is to get the most out of a specific device or create a system utility with game mechanics, it's worth considering other paths.

Native development: Kotlin and Java

Initially, the Android ecosystem was built around a language Javathat has long been an industry standard. Today Kotlin is officially recognized as the preferred language for development for this platform. It offers a more concise syntax, protection against errors with null values, and excellent compatibility with existing Java libraries.

With native development, you get full access to all operating system APIs. This allows you to create games with minimal resource consumption, since there is no layer in the form of a third-party engine. You can fine-tune work with multi-touchgyroscope and vibration response using standard Android SDK classes.

However, writing graphics from scratch in OpenGL ES or Vulkan is an extremely labor-intensive task. You will have to implement texture loading, shader management, and physics math yourself. This approach is justified only for simple 2D projects or specific tasks where every megabyte of APK file size is critical.

⚠️ Attention: Google Play is tightening the requirements for application size. Using heavy native libraries without optimization can lead to refusal of publication or poor search rankings due to long loading times.

Unity: The leader in mobile game development

To the question “how to write games for Android”, most professionals will answer in one word - Unity. This engine dominates the mobile gaming market due to its balance between performance and usability. It supports a language C#that is easier to learn than C++, but more powerful than scripting languages.

The key advantage of Unity is a huge store of assets and ready-made solutions. You can buy or download free inventory systems, artificial intelligence of enemies or ready-made water shaders. This speeds up development significantly, allowing you to focus on game design and not on writing basic code.

The engine does an excellent job of exporting a project to Android. In settings Player Settings you can flexibly control the graphics quality, texture resolution and compression level for different devices. Unity automatically generates the necessary manifest files and signs the application, simplifying the build process.

Despite its popularity, Unity has its own nuances. The Garbage Collector in C# can cause micro-freezes in dynamic scenes if you do not pay attention to memory allocation. Also, the company's licensing policy periodically changes, which causes concern among large studios, although for indie developers the conditions remain loyal.

Unreal Engine: New Generation Graphics

If your goal is to create a shooter or RPG with console image quality on a smartphone, then Unreal Engine has no equal. This engine uses a language for high-performance tasks and a visual scripting system that allows you to app logic without writing code. Technology and an advanced lighting system make mobile projects visually stunning. However, beauty comes at the cost of performance. Mobile processors and GPUs get very hot when running heavy projects on Unreal, which requires careful optimization of levels and textures. C++ for high-performance tasks and a visual scripting system Blueprints, which allows you to app logic without writing code.

Technology Nanite and advanced lighting system make mobile projects visually stunning. However, beauty comes at the cost of performance. Mobile processors and GPUs get very hot when running heavy Unreal projects, which requires careful optimization of levels and textures.

The size of the assembled application on Unreal Engine is often significantly larger than similar projects on Unity. An empty project already weighs a lot due to the built-in libraries. For users with budget smartphones and limited memory space, this may be a barrier to installing your game.

⚠️ Attention: Unreal Engine takes a 5% royalty on game revenue if it exceeds a certain threshold. Carefully study the license agreement before starting a commercial project to avoid legal problems.

Secrets of optimization for mobile devices

Disable complex post-processing effects such as depth of field and motion blur. Use simplified materials and limit the number of dynamic light sources in the scene.

Godot and other lightweight engines

For developers who are looking for an alternative to industry giants, Godot Engineis great. It is a completely free and open source solution that does not require royalties and does not impose restrictions on the distribution of games. Its architecture is lightweight, which is ideal for 2D projects.

Godot uses its own language GDScript, the syntax of which is very similar to Python. This makes entry into development extremely easy for beginners. The engine consumes little RAM and starts quickly even on old laptops, which lowers the entry barrier for students.

There are other specialized tools, such as Defold or Cocos2d-x. They are often used to create hyper-casual games where loading speed and minimal application weight are important. These engines provide fewer visual features out of the box, but give full control over the code.

Engine	Programming language	Best for	Difficulty to learn
Unity	C#	Mobile games, AR/VR	Average
Unreal Engine	C++, Blueprints	3D shooters, high graphics	High
Godot	GDScript, C#	2D platformers, indie games	Low
Native (Android)	Kotlin, Java	System utilities, 2D	Very high

Tools for 2D and hyper-casual games

The mobile entertainment market is oversaturated with simple games that do not require powerful engines. For such projects, constructors or specialized frameworks are often used. For example, Construct 3 allows you to create games without writing any code at all, using visual event logic.

Framework LibGDX remains a popular choice among programmers who want to write code but don't need a heavy scene editor. This is a set of Java libraries that give complete control over rendering. You decide how to load resources and how to manage the game loop.

• 🚀 Quick start: Constructors allow you to create a prototype in one evening without deep knowledge of algorithms.
• 🎨 Visual editor: Godot and Unity provide convenient tools for arranging objects on the level.
• 💾 Export: Most modern engines allow you to assemble an APK file in a couple of clicks through the menu Build.

When choosing a tool for 2D, it is important to consider support for sprite atlases and animations. Not all engines work equally well with a large number of objects on the screen. Conduct performance tests on a real mid-range device before committing to the technology.

Comparison of performance and requirements

Game performance on Android highly depends on how efficiently the engine uses the resources of the processor and video card. Native code will always be faster than interpreted code, but the difference between a well-optimized Unity project and a bad native project can be colossal.

It is important to remember the variety of screens and aspect ratios. Engines with a built-in adaptive interface (UI) system save hundreds of hours of programmer work. In Unity, for example, the system automatically adjusts controls to different diagonals. Google Play publishing conditions and API level requirements are regularly updated. Always check the minimum Android version (minSdkVersion) with the latest store requirements before building the release version. Canvas Scaler automatically adjusts controls to different diagonals.

⚠️ Attention: Google Play publishing conditions and API level requirements are updated regularly. Always check the minimum Android version (minSdkVersion) with the current store requirements before building the release version.

The choice of technology stack is a compromise between development time, image quality and performance. There is no perfect tool, only the right one for your specific task. Experiment with prototypes to understand where you will be more comfortable creating.

Frequently asked questions

Do you need to know mathematics and physics to create games?

A basic understanding of vectors and coordinate systems is necessary in any case. However, modern engines have built-in physics modules (for example, PhysX in Unity) that take care of complex calculations of collisions and gravity.

Is it possible to create a game on a phone?

Technically, this is possible using applications like Acode or special IDEs, but the process will be extremely uncomfortable. For serious development, you need a computer with sufficient RAM and a good monitor.

Which programming language should you learn first?

If you want to make games quickly, learn C# for Unity. If you are interested in fundamental development for Android and working with the system, start with Kotlin. JavaScript is suitable for the web and simple games.

How much does a license for game engines cost?

Godot is completely free. Unity and Unreal Engine are free to use until you reach a certain income threshold (usually $100,000 - $1,000,000 per year), after which a subscription purchase or royalty payment is required.

How to publish a game on Google Play?

You will need to register a developer account (one-time $25 fee), prepare graphic assets, assemble signed APK or AAB file and undergo moderation, which can take from several days to a week.