Our clients often come with an idea for a video game but when it comes to technical details and especially choosing an engine, they’re faced with quite a challenge. They either have to dive deeply into the game development specifics and do a lot of their own research or rely entirely on their game development specialists. We’ve decided to give an extensive answer to one of the most asked questions by our clients – which engine to choose for your video game: Unity or Unreal.

In fact, these are 2 most popular game engines with wide functionality and great features. There’s a variety of world-famous games built with Unity like Pokemon Go, Angry Birds Epic, Assassin’s Creed: Identity, Battlestar Galactica Online, Kerbal Space Program, Wasteland 2 etc. The popular games powered by Unreal include Mortal Kombat X, Batman: Arkham City, BioShock Infinite, Enslaved: Odyssey to the West, Gears of War 3, Mass Effect 2 etc.

So you can see that it’s possible to create virtually anything either with Unity or Unreal and you can’t say for sure that one engine is better than the other. The thing is each of them has its pros and cons and the choice should be made only after you have clear answers to the following questions:

What kind of game do you want to create: mobile, web or console; multiplayer, 2D or 3D etc.?
Which platforms do you want to launch it on?
How much time can you spend on game development?
How are you going to make money on your game?
How important are graphical capabilities of an engine for you?
We work both with Unity and Unreal and can’t really single out one engine as our favourite, so we’ll try to be as objective in this analysis as possible. Now let’s consider the benefits and drawbacks of each of them to make your choice easier.

Unity Game Engine
Unity Games
Games built with Unity

It has much better cross-platform integration. It enables you to deploy your game across all major mobile, VR, desktop, console, and TV platforms plus the Web. The supported platforms include Android, iOS, Windows Phone, Tizen, PC, Mac, Linux, PS4, Xbox One, PlayStation Mobile, PlayStation Vita, Wii U, tvOS, Android Tv, and Samsung Smart TV. Native support is available for major VR platforms including Oculus Rift, Gear VR, Playstation VR, Microsoft HoloLens and Steam VR/Vive.
Unity is the best fit for creating mobile games as, overall, it’s easier to build them with this engine. In general, it’s more logical and convenient to develop simple games with Unity.
It is better and faster for developing mobile VR, e.g. for Cardboard.
It has a huge asset store and many plugins, which gives you more access to diverse game monetization infrastructure like mobile ad networks, ad videos, etc.
Unity is written in C# which is not so difficult as C++ used in Unreal, so the development process is easier and faster with this engine.
The engine architecture is simpler to understand and work with, the launch process is less complicated.
It’s more popular. Most of our clients request Unity, as it’s a more widely-used engine.
Unity has a bigger community which is really active in forums, so if developers have some questions, there are many specialists out there to help them.
It’s easier to find qualified Unity developers due to the size of the community. It is especially important in force majeure situations such as when a key specialist quits in the middle of a project.
Although as a client you don’t need to worry about licences because your developers are bound to have them, it’s worth mentioning that Unity has a completely free version. What’s even more important, you don’t have to pay any royalties when your game starts making money.
In terms of graphics, Unity can’t offer the possibilities and the quality of Unreal.
Unity gives away the source code only under specific conditions and, anyway, you have to pay for it.
Rendering is slower. For instance, it takes much more time to render lighting. On one of our projects, we had to wait for 2 weeks to have all lighting processed by Unity engine. And imagine that you need to make some changes – you’ll have to do it all over again.
Unreal Engine
Unreal games
Games built with Unreal

Unreal is great for high-tech triple-A games with big budgets where you need to achieve the ultimate quality. So in terms of graphics it really takes the lead. For example, we’ve picked Unreal for one our recent VR projects because the client’s main request was to make this demo presentation as realistic as possible.
It has great blueprints which work like building blocks so even artists without any programming knowledge can use the engine to assemble and adjust basic things. Also, this feature is really great for prototyping. Yet for completing serious tasks, you can’t do without at least some programming in C++.
Unreal is open-source which is a great advantage because it makes development easier and more efficient.
Rendering technology is one of the biggest benefits of this game engine. Post processing is really fast and there is support for many features.
Concerning virtual reality, both engines have good VR integration. However, we mostly use Unreal for VR projects to achieve the best quality picture. So we’d advise to go for this engine when working with Gear VR, Oculus, and HTC VIVE.
Another selling point for Unreal is its performance as it uses less memory and resources.
It has available instruments for many cases and needs, which Unity lacks. For instance, Unity is limited to a set of standard shaders and Unreal has visual editors for them. With Unity, you’ll have to write the same things in code.
It has great instruments set for game optimisation.
The engine has better access to visual debugging, you can easily test what, when and how is being drawn, you can control the whole process and monitor how much time is spent on a certain element.
Concerning the licensing model, once you’ve begun making money on your product, you’ll need to track gross revenue and pay a 5% royalty on that amount after the first $3000 per game per calendar quarter.
Unreal has a simpler and smaller asset store because they choose the submitted assets more carefully. The asset you’ll upload to the Unity store might not be accepted to the Unreal store.
It’s not the best tool for small games. There’s no point in making small games with this game engine. Usually, if our clients go for Unreal, we’re talking about some big project with big budget. Typically, such projects have longer estimates and, as a result, cost more.
There aren’t so many Unreal experts because the engine is usually chosen by very specialized teams.
We hope this list will be helpful in weighing up the pros and cons of each game engine and choosing the right tool for your project. Both Unity and Unreal offer great possibilities, and you can build great things with them. You might of course follow the advice of your developers, but if you keep in mind the needs of your business and have a clear picture of what you want to achieve in your particular game, this choice will be much easier.
Valentinsedl 7 october 2018, 16:17

If you are a software developer working in the video game industry and wondering what else you could do to improve the quality of your product or make the development process easier and you don’t use static analysis – it’s just the right time to start doing so. You doubt that? OK, I’ll try to convince you. And if you are just looking to see what coding mistakes are common with video-game and game-engine developers, then you’re, again, at the right place: I have picked the most interesting ones for you.


One of the best ways to prove that static analysis is a useful method is probably through examples showing it in action. That’s what the PVS-Studio team does while checking open-source projects. After publishing of various articles, we compiled our top-10 mistakes from the program code in the video-game industry, and now we suggest you read this article - https://www.viva64.com/en/b/0570/

List of projects considered in the article:
  • X-Ray Engine
  • CryEngine V
  • Space Engineers
  • Quake III Arena GPL
  • Unity
  • Godot
  • Doom 3
  • Xenko
  • Unreal Engine 4

Although video-game development includes a lot of steps, coding remains one of the basic ones. Even if you don’t write thousands of code lines, you have to use various tools whose quality determines how comfortable the process is and what the ultimate result will be. Static analysis is a very useful tool when developing, and one more option to help you improve the quality of your code (and thus of the final product).
Kate Milovidova 4 may 2018, 13:35

A story about the sense of vision, the perception of frames and the refresh rate, motion blur and television screens.
You could hear the term frames per second (FPS), and that 60 FPS is really a good reference for any animation. But most console games go for 30 FPS, and movies are usually recorded on 24 FPS, so why should we aim for 60 FPS?
Frames ... per second?
The early days of filmmaking
The shooting of the 1950 Hollywood film Julius Caesar with Charlton Heston

When the first cinematographers began to make films, many discoveries were made not by a scientific method, but by trial and error. The first cameras and projectors were manually controlled, and the film was very expensive - so expensive that when trying to shoot, they tried to use the smallest possible frame rate, just to save the film. This threshold was usually between 16 and 24 FPS.
Skull 1 november 2017, 11:35


The speed of the game is the responsibility of all team members, regardless of the position. We, 3D programmers, have ample opportunities to control the performance of the video processor: we can optimize the shaders, sacrifice picture quality for speed, use more cunning rendering techniques ... However, there is an aspect that we can not fully control, and this is the graphics resources of the game.

We hope that artists will create resources that not only look good, but also will be effective in rendering. If the artists learn a little more about what is happening inside the video processor, this can have a big impact on the frame rate of the game. If you are an artist and want to understand why aspects such as draw calls, LODs and MIP textures are important for performance, then read this article. To take into account the impact that your graphics resources have on game performance, you need to know how the polygon meshes get from the 3D editor to the game screen. This means that you need to understand the operation of the video processor, the chip that controls the graphics card and is responsible for the 3D real-time rendering. Armed with this knowledge, we will look at the most frequent performance problems, understand why they are a problem, and explain how to deal with them.
Papay 17 october 2017, 15:34

The artists painted bright graphics, the programmers built it into the game, the animators added movements - it would seem, everything is ready. But no, managers do not like:
You need to remove gray spots and white lines. Then the pulsating button jerks, there the progress bar goes with a ladder.
You look at the game resources - there is nothing in them, all sprites are cropped. You read the code - the formulas are correct, there is enough shader accuracy. But the result was still unimportant. Where is the mistake?


A small poll for those who already know where the artifacts come from. What to do in this situation?

You need a powerful graphics card and fresh drivers;
It is worth making downloadable sets of graphics for all possible screen resolutions;
Square textures with the sizes of a degree of two do not have such problems;
This is all due to the compression of graphics (PVRTC / DXT5 / ETC1 / ...);
In the graphics editor you will have to smudge the edges slightly;
This should have happened, because we did not prepare graphic data;
Only antialiasing will help;
You need textures and targets in the premultiplied alpha mode.

What is the correct answer, why exactly and how to overcome the artifacts of graphics read under the cut.
Skull 10 october 2017, 10:21

I will introduce you to the full tutorial on HTML5 with a demo on the algorithm of machine learning the video game Flappy Bird. The purpose of this experiment is to write an artificial intelligence controller based on neural networks and a genetic algorithm.

That is, we want to create an AI robot that can learn the optimal game in Flappy Bird. As a result, our little bird can safely fly through obstacles. In the best scenario, she will never die.

After reading the theory behind this project, you can download the source code at the end of this tutorial. All code is written in HTML5 using the <a title="Phaser Framework" href="http://phaser.io/"> phaser </a> framework. In addition, we used the Synaptic Neural Network library to implement a neural network so that it would not be created from scratch.
First, look at the demo to evaluate the algorithm in action:


Run in full-screen mode
MeLavi 10 october 2017, 9:05

In the code id Software sometimes there are unmatched pearls. The most famous is, of course, 0x5f3759df , which even got comics on xkcd . Here we are talking about filling the screen: pixels are colored one at a time in random order, without repetition. How is this done?

xially 5 october 2017, 14:56

The problem of most disputes about the problem of piracy is that in them "value" is estimated only in "monetary" dollars. Therefore, the problem is formulated like this: "When buying a game from us, the user spends money dollars. A pirated copy costs zero money dollars. So most people will pirate the game if they have a choice, so you need to stop them at any cost. "

The dollar is famous for everyone.

This is the error, therefore, at least four currencies, and not one (monetary dollars) should be taken into account here.

I propose the following notation:

($ D) Monetary dollars
($ B) Temporary dollars
($ D) Headache paints [in the original Pain-in-the-butt-dollars]
($ Ч) Honesty Dollars

The player makes the choice to buy or spiratit game based on how much "each" service (and not product! ) costs in these four currencies, and also depending on the value for the player each of them.
MeLavi 27 september 2017, 13:23

According to the StatCounter statistics, the number of mobile web users has surpassed the number of desktop web users. This goes to show how many people use their mobile devices to browse the internet. According to Gartner prediction, the revenues from mobile app will surge to $77 billion in 2017. The question remains, how will you make your app stand out from millions of other mobile apps? The answer is by following the best mobile app development practices. In this article, you will learn about seven best mobile app development practices.

Know Your Target Audience
The first question that you need to ask yourself is who will use this app? Understand how your user will interact with your app and which feature they want in your app. If you want your mobile app to be a roaring success then you should know your audience like a palm of your hands. The better you know your audience, the better change you have to give them what they are looking for. Not only does this makes your job a whole lot easier but it also pave the way for delivering a perfect user experience for your app users.

Have a Design Strategy
Having a design strategy is critical for success especially when you are developing a cross platform mobile application. When you are designing a cross platform app, multiple activities are underway simultaneously. Therefore, if you do not have a sound strategy then there are bright chances that you mess up your mobile app. List down key functionality of your mobile app as well as future components on paper so that you can easily minimize the risk of emerging problems at different stages of app development cycle. Involving users into the design process will provide you with valuable feedback that will take you closer to designing a perfect mobile app for your users.

Develop Most Important Features First
Many app developers take the adventurous route of creating the most difficult feature of the app first. As a result, they fail to launch the app before the deadline and their mobile app exceeds budget. The best way to go about it is to focus on essential and core features and develop them first then move on to create features that are more complex. You will have to lay a solid foundation with core features and then take it from there. App developers can work on additional features and launch them in next releases or as a plug in when necessary but should focus on critical features of an app.

Make App Security Your Priority
According to Now Secure mobile security report, 35% of mobile communication, both voice and data are not encrypted. Moreover, most of the mobile communication takes place through wireless medium. This makes it a soft target for hackers and more vulnerable than other wired communication devices. Make mobile app security your priority, identify and fix any vulnerability in your mobile app before releasing the mobile app for users. Keep the user confidential and private information safe so that users are comfortable in using your mobile app.

Test, Test, Test
Despite putting a lot of emphasis on testing the mobile app before putting it up for downloads, a survey revealed that, less than 50% of companies test their mobile app for security while 33% do not even bother to test their mobile app, which is quite alarming. It is better to test your mobile app at each stage of the app development cycle but if you cannot do it, at least test the app thoroughly at the end and make sure that there are no glitches left before uploading your mobile application on app store. One bad user experience can prove to be very costly so it is better to pass your mobile app through comprehensive testing processes to prevent such issues.

Establish a Feedback Mechanism
Last but certainly not the least, is to incorporate feedback into your mobile application. Provide user with a medium through which they can give their feedback and share their opinion with you. Users can prove to be a vital resource if you allow them to give feedback as they experience crashes, bugs and errors that you might have missed. This makes it easy for app developers to make improvements in the future. Ask users about which features they want to see and add them in the future releases to satisfy them.

At the end of the day, it usually comes down to the user experience and satisfaction that will decide the fate of your app. If you know about any other mobile app development best practice that can make a big difference to your mobile app development efforts, then feel free to share it with us in comments section below.
Ruby Madison 12 june 2017, 7:58

Once it seemed that the movie stunts will be done without stuntmen. However, it's still wrong. The computer animation always uses the motion capture technology to capture the stuntman motion.

Even the the most advanced blockbusters to make the animation that exceeds the stuntman capabilities when shooting motion capture use the steel ropes, trampolines and other tricks. Is the animation possibility limited to that?
Siera 3 june 2012, 11:13
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