Mobile gaming has long ceased to be the province of simple “time killers” with primitive graphics. Modern titles on smartphones offer graphics that are not inferior to console hits and deep game mechanics. However, behind every successful project on Google Play there is a complex choice of tools that directly affect productivity, development speed and the final quality of the product.
Developers are often faced with a dilemma: use ready-made game engines to speed up the process or write everything from scratch in native languages for maximum optimization. The answer to the question of how to write games for Android depends on many factors: the team’s budget, the desired graphics, the target audience and even the type of monetization.
In this article we will analyze in detail the main development tools, their technical features and applicability in real projects. You will find out why some studios choose Unity, others switch to Unreal Engine, and others still prefer pure code to C++ or Kotlin. Understanding these differences is necessary for both beginning indie developers and experienced engineers planning to expand their technology stack.
Game engines as an industry standard
The vast majority of modern mobile games are created using specialized ones game engines. These are software systems that take on routine tasks: graphics rendering, physics processing, working with sound and managing memory resources. Using an engine allows you to focus on gameplay, and not on writing low-level code for every sneeze of a smartphone.
Remains the market leader for many years. Unity. This engine attracts developers with its cross-platform functionality and powerful asset store. About 60-70% of all mobile games are written on it, including such hits as Pokemon GO i Call of Duty: Mobile. A key advantage is the programming language C#which is considered easier to learn than C++ and allows you to quickly prototype ideas.
⚠️ Attention: Unity uses a licensing model that can change depending on the number of installations of your application. Before starting a large commercial project, be sure to check the current tariff conditions on the official website of the developer to avoid unpleasant surprises with royalty payments.
The second giant is Unreal Engine from Epic Games. If your goal is photorealistic graphics at the level of AAA projects, then this engine has no equal. It uses a language C++ and visual script system Blueprints. However, it is worth considering that the “heaviness” of the engine can be a problem for budget smartphones, so optimization for Android here requires high qualifications.
Native development: Java and Kotlin
Although engines dominate the industry, native development in languages Java and Kotlin has not gone away. These languages are native to the Android operating system. Kotlin, in turn, was officially recognized by Google as the preferred language for Android development due to its conciseness and code security.
The native approach is most often chosen for creating 2D games, puzzles, text quests or hyper-casual projects where complex 3D rendering is not required. Using standard Android libraries, such as Android SDK and OpenGL ES (via JNI), allows you to achieve a minimum APK file size and maximum compatibility with older devices.
The main advantage of native development is complete control over the application lifecycle. You do not depend on third-party engine updates and do not carry unnecessary libraries with you. However, creating complex physics or 3D graphics from scratch will require writing a huge amount of code, which significantly increases development time compared to using ready-made tools.
For simple 2D projects, using a heavy 3D engine may be overkill. Consider native development on Kotlin or lightweight frameworks to ensure fast loading of the game even on weaker devices.
C++ and cross-platform frameworks
Language C++ remains the king of productivity. It is on it that the Unity and Unreal engines themselves, as well as many Android system components, are written. For games where every millisecond of computation is critical (for example, complex simulators or strategies with thousands of units on the screen), C++ is the only choice.
For working with C++ on Android, Android NDK (Native Development Kit) is often used. This allows you to write performance-critical parts of the code in C++, while leaving the interface and system calls in Java/Kotlin. There are also frameworks like Defold or Godot (which uses its own GDScript language, similar to Python, but also supports C#), which offer an excellent balance between performance and convenience.
The engine deserves special attention. Godot. It is completely free (Open Source), weighs less than 100 MB and is great for 2D and light 3D. Unlike commercial giants, Godot does not require royalties on profits, which makes it an ideal choice for indie developers and small studios starting their journey in mobile game development.
Comparison of tools: table of characteristics
To systematize the information and help you make a choice, we have prepared a comparative table of the main tools. It will help you quickly assess which technology stack is best suited for your specific tasks and team resources.
| Tool | Main language | Graphics | Difficulty of learning | License |
|---|---|---|---|---|
| Unity | C# | 2D / 3D (High-End) | Average | Freemium / Subscription |
| Unreal Engine | C++ / Blueprints | 3D (Ultra High-End) | High | Royalties after $1 million |
| Godot | GDScript / C# | 2D / 3D (Lite) | Low/Medium | MIT (Completely free) |
| Android Native | Kotlin / Java | 2D / Simple 3D | High (for games) | Free (Open Source) |
| Defold | Lua | 2D | Low | Apache 2.0 (Free) |
As can be seen from the table, the choice is great. For beginners who want to quickly see the result in 3D, Unityis best suited. If you dream of next-gen graphics and are ready to study complex systems, this is your choice Unreal. Ideal for lovers of 2D and minimalism Godot or Defold.
Why is Lua popular in mobile development?
The Lua language is used in the Defold engine and is often implemented into other projects due to its incredible ease and speed of work. It is ideal for scripting game logic without loading the main execution thread, which is critical for mobile processors with limited energy reserves.
Optimization for various Android devices
Development for Android is always a fight against fragmentation. There are thousands of smartphone models on the market with different screens, processors (Snapdragon, Exynos, MediaTek), amounts of RAM and OS versions. A game that flies on a flagship can turn into a slideshow on a budget smartphone.
The key aspect here is working with assets. Textures must be compressed into formats supported by the GPU of a particular device (for example, ASTC or ETC2), and polygonal models must have several levels of detail (LOD). Engines like Unity and Unreal take on some of this work, but control over this must be constant.
It is also important to remember about the thermal regime. Mobile devices do not have active cooling like PCs. If your game forces the processor to run at 100% for too long, the smartphone will overheat and the system will force the system to reset, resulting in lag. Code optimization and frame rate (FPS) limitation are mandatory stages of development.
☑️ Optimization checklist before release
Monetization and publication on Google Play
Creating a game is only half the journey. For the project to become successful, it is necessary to implement monetization mechanisms and properly prepare the application for publication. Most engines have ready-made plugins for integrating advertising (AdMob, Unity Ads) and in-game purchases (IAP).
Google Play requires compliance with strict rules. The application must be stable, do not contain malicious code and comply with content policies. Particular attention is paid to permissions: do not request access to contacts or microphone if it is not necessary for gameplay, otherwise moderation may reject the release.
⚠️ Attention: Google Play Store rules are updated regularly. In particular, the requirements for the target API (Target SDK) and privacy policies change. Always check the "Policy Center" section in the developer console before the final build of the release version to avoid blocking your account.
For testing, use closed tracks. Download the assembly (.apk or .aab) to the internal testing track, invite testers and collect feedback. This will help identify critical bugs that could have escaped the attention of developers on emulators.
Successful release depends not only on the quality of the code, but also on compliance with the rules of the application store and proper integration of advertising SDKs at the early stages of development.
Frequently asked questions (FAQ)
Is it possible to create a game for Android on your phone?
Technically, this is possible using applications like Acode or Termux, where you can run development environments. However, the power of a smartphone is not enough to fully work with 3D graphics and compile heavy projects. It is recommended to use a PC or laptop.
Which engine is better for 2D games in 2026?
For 2D they are great Unity (versatility), Godot (ease and freeness) and Defold (specialization in 2D). The choice depends on whether you need 3D in the future and how important the size of the final game file is.
Do you need to know C++ to start development?
No, it is not necessary. To start in mobile game development, knowledge of C# (for Unity) or GDScript (for Godot) is quite enough. C++ is only required if you plan to do deep optimization or work on the Unreal Engine.
How much does it cost to publish a game on Google Play?
To publish games, you must register a Google Play developer account. This is a one-time payment of $25. After payment, you get access to the console forever without monthly subscriptions.
Is it really possible to make money on the first game?
Yes, but the competition is huge. Success depends on the quality of gameplay, marketing and player retention. Many developers start with small hyper-casual projects or niche indie games, gradually increasing their audience and experience.