I Reviewed and Tested 7 Best Game Engines: Who Won?

Dynamic moves, crystal clear animation, and quirky audio resounding as characters move on the screen—my childhood was a coffee table book of games.
As I enjoyed the “thrill” of setting new high scores and winning virtual tournaments, I developed a penchant for exploring game engines and their role in automating game operations in detail. 

While part of the developer crew, I took my time and interacted with game developers and engineers to go into the backend of gaming animation and prototyping. That’s when I realized that games are a patchwork of multiple departments, like graphic design, UI development, and quality assurance. I was also informed of multiple worries game developers deal with, like hardware inconsistencies, low-level API compatibility, and overloading of memory storage.

I evaluated 40+ game engines on my own, out of which I shortlisted the 7 best games and engines that offered an integrated development environment for stimulating high-quality games.

7 best game engine software that I strongly recommend

Game engines are software development kits (SDKs) that game developers use to design, animate, and program the front end and the back end of high-quality games. During my analysis, I explored various gaming studios and could jazz up games with just a few clicks. 

But that’s not all. As a game developer, I had to examine the nuances of virtual characters, scene transitions, responsive physical movements, and overall simulations to optimize the game production lifecycle.

A game code editor is pre-equipped with multiple production libraries and software packages, which reduces the frequent function declaration and package calls. Thus, I could design web interfaces, customize code, and integrate graphical features all in one place.

While game engines offered centralized development control, they also integrated with visual studios and 3D modeling engines to further automate the game design and prototyping. Some game engines also offered AR/VR visualization, geometric modeling, parametric modeling, and lightning-fast production rendering to help non-developers build new games.

What makes a game engine worth it: my opinion

Developing a game involves multiple coding trials and errors. I got the hang of it when I sat down to visualize a gaming concept, sketch it out, and figure out various UI and UX components and integrations essential to supporting my gaming project.

While game engines supported me with multiple elements like design templates, conversation starters, or source code editors, I still felt that coders might require more resources. I took my time to analyze these game engines from a business point of view and enlisted the top features that can optimize the production pipelines for game developers. 

• Cross-platform pipelines and modular SDK integration:  As I designed and prototyped a few game graphics, I put them to the test for cross-platform and cross-browser compatibility.  Game engines with software development kits (SDK) emerged as they auto-deployed game projects for different hardware platforms without any additional service or plugin. Rendering or publishing a game project on hardware devices (like PlayStation Network, Xbox Live, or iOS Game Center) is the only way to ensure you will get an end-to-end game development studio to optimize your game production. 
• High-performance rendering pipeline with shader customization: If you are developing a video game with high-resolution and sharp graphics, there is a possibility that a standard game engine would slow down the process of rendering project files in your pipeline. I evaluated these game engines based on their rendering speed and custom shader controls, which can help you design visual ecosystems and render the files conveniently without diving deep into low-level graphics programming. 
• Modular and scalable physics middleware: You need a physics simulator to adjust and manage the dynamic flows and transitions of visual characters on the main game interface. The game engine solutions I tested offer modular physics engines or gaming processors like Havok or NVIDIA PhysX. This physics middleware includes out-of-the-box features like soft-body dynamics, terrain collision optimization, inverse kinematics, and physics synchronization for large-scale and high-memory virtual systems. 
• Customizable scripting and low-level API access: If I wanted to customize my gaming application and add a new scene or visual object, these platforms provided custom scripting and low-level API access, which personalized game graphics and the gaming environment without requiring any coding effort. These game engines offered built-in script editors where I could modify the editing code to pivot to a different game idea or design.
• Integrated profiling and debugging: As game applications consume high graphical processing power, I also chose tools that offered actionable insights into memory usage and power consumption with integrated profiling and debugging so that it doesn’t consume a lot of space on your hardware devices. These features detect any memory bottlenecks or analyze game interfaces to spot any unnecessary memory consumption and fasten the load time.
• Production and rendering quality:  Integrated game software development kits need to be accommodated with a high-speed production and rendering pipeline to process and upload your web or console code onto live projects faster without compromising on quality, navigation, and built-in syncs and transitions. The tools that I have listed below offer complete production and rendering automation to build better and more immersive games and optimize communication with your peers or testers to take your app live.

Out of the 40+ game engines I considered for making games, I narrowed down the top 7 that offer a culmination of all the features listed above and the required tools and resources to create, ideate, and design better games, even if you have zero to less coding knowledge.

This list below contains genuine reviews from the game engine category page. To be included in this category, a software must:

• Be designed specifically for video game creation.
• Provide native real-time graphics rendering, physics simulation, asset management, and scene and level editing.
• Support at least one major gaming platform (PC, console, or mobile)
• Offer documented APIs or SDKs for game development.

*This data was pulled from G2 in 2025. Some reviews may have been edited for clarity.  

1. Unreal Engine

Like Call of Duty or Player of Unknown Battleground, Unreal Engine gave me all the resources and options to build warzone or shooter games.

The animation and transition features of the Unreal engine left me in awe. I could build jaw-dropping visuals that looked straight out of a high-budget Hollywood production.

From providing low-level graphics programming to multiplayer support to a huge repository of content assets, developing a new game with the Unreal engine felt like a breeze.

Whether you are building a 2D game, integrating VR simulation, or initializing dynamic characters in a new scene, Unreal Engine provides an integrated data studio and even optimizes graphics rendering times. I recently upgraded to Unreal Engine 5, and it felt like a huge leap from earlier versions in terms of fast real-time rendering and animation quality.

Then there is Blueprint, their visual scripting system. It is one of those features which has made game development and monitoring way simpler, as it provides low-code scripting support. It lets you drag and drop logic blocks which fastens the process of game prototype development.

Another highlight is the community and learning resources, which made me reach out directly to my peers for doubts. Even when I was just starting, I found countless tutorials, courses, and forums filled with people eager to help.

Now, let’s talk about the flip side. Working with the Unreal Engine got really confusing at one point because of the large volume of technical and incomprehensible features for new gaming projects. The learning curve felt a little steep, especially if you are not making heavy-memory shooter games.

The engine also encountered some hardware incompatibility. I struggled when running or launching the app on an older PC or device. I was disappointed with the lags and crashes when I tried to run any new game file.

But, all said and done, the Unreal Engine can really improve the immersive gaming experience by providing a full-fledged, code-to-production ecosystem without any additional requirements.

What I dislike about Unreal Engine:

• I found it difficult to navigate all the tools and resources, and as most of the documentation was in Spanish, I couldn’t implement the solution quickly.
• If I tried to open an extensive VR project, I couldn’t do it on an old hardware or computing device.

What do G2 users dislike about Unreal Engine:

“Upgrading projects to newer versions of Unreal Engine may occasionally introduce compatibility issues with existing assets or plugins, necessitating additional work for migration”

– Unreal Engine Review, Arjun P.

2. Unity

 Unity provided game development services for various industries, such as automotive, real estate, graphic design, interior decoration, and architecture, to design and prototype 2D or 3D models with dynamic illustrations.

If you are a beginner in game development or graphic design, Unity is the ideal choice. I have used it myself for some projects (and spent countless hours building forms and interfaces) and can confidently say it is one of the most versatile game engines out there.

Whether I was a complete beginner or felt like a seasoned developer, the interface felt quite intuitive and user-friendly. I found myself putting together visual prototypes in just a few hours without worrying too much about low-level coding or technical issues.

It also offers visual geometry and sketching options to design new prototypes. If you want to build a 2D zeroes and crosses game or a 3D cooking game, Unity can do it. My projects also ran without interference across multiplayer devices (like PC, mobile, or gaming consoles.)

I also want to highlight the Unity Asset Store. It was a treasure trove of pre-built assets, tools, and templates. I experimented with many environments like forest environments, Times Square backgrounds, or white-sand beaches, and all were available and ready to download.

Finally, I could find the answers to every problems on the community hubs.  The forums, Reddit threads, and even YouTube tutorials helped set up the platform. Any support you need is available at your fingertips.

This being said, it did have its set of downers. One of the biggest pain points for me is the pricing. I found the pricing to be a bit steeper and costlier than other game engines. If you simply want to design a passion game or develop a new hobby, Unity might not be the call for you.

While there is a free tier, more versatile and useful features are hidden behind the paywall. I also struggled with system performance and lags. I have run into bugs more times than I want to admit and large projects also pushed the engine’s stability to limits. 

I also struggled with versioning and updates. Updating to a new feature or version of Unity sometimes broke my game projects, and the recovery was time-consuming.

Unity might be really powerful, but it is not the fastest. Certain tasks, like baking lighting or compiling large projects, took forever. While the engine offers a lot of ground, there were times when I wished for a more exhaustive set of features.

Overall, Unity is an all-in-one platform that provides AR or VR immersion, visual geometry, SDK integration, product visualization, physics simulation, and low-level graphic modeling in one place and empowers you to build high-quality game pipelines for various devices. 

What I dislike about Unity:

• My system hung a few times due to unreciprocated product updates which caused a hindrance for the current active projects.
• I could figure out the lack of development and UI features on the free version of Unity and comprehended that t more advanced features come with paid plans.

What do G2 users dislike about Unity:

“Unity’s huge physics library and scripting functions require very steep learning. Fortunately, it has a huge developer base, hence lots of tutorials. It is too much performance hungry, means computer drains huge resources to just unity causing to crash on bigger projects containing multiple scenes and assets.”

– Unity Review, Manav S.

3. Cry Engine

Cry Engine was an end-to-end game development framework that offered age creation, developer affinity, and performance boost to kickstart your game creation.

I could glide through all stages of game development as it offered full source code, a game-integrated development environment, and third-party integrations and plug-ins to simply ideate and design applications.

First, Cry Engine’s visual simulator was nothing like I had seen before. The quality of graphics and animations was out of this world. They’ve got this awesome royalty model where you make 5% royalties if your project is sold for up to $5000 annually. 

I could also contact a super-friendly and knowledgeable developer community that is reactive and responsive to your queries and genuinely wants to see you succeed.

I was also impressed with the quick and timely software upgrades of Cry Engine, which ensures that all the recent improvements are reflected in the platform’s mainframe environment.

This being said, Cry Engine does have a lot of flaws. Although it offered full source code, I struggled to manage the backend, which was written in C++. It proved to be a little more complicated for me than the previous tool’s engine, which was programmed in C#, a relatively simpler language to learn.

Then, there was documentation. While there is a decent knowledge base, some parts are outdated or have gaps. It is not a dealbreaker, but it meant I spent more time googling about features or in the experimentation phase.

And the content asset store also turned out to be a little disappointing. Compared to fellow contenders like Unity or Unreal Engine, I found the templates and designs to be limited, which skewed my area to develop unique games.

What I dislike about Cry Engine:

• While I got access to C++ source code, I had to spend prior time learning the programming language and referring to the knowledge base to develop my game backend.
• The Flow Graph was a little limiting and didn’t provide all the visual features I wanted to include in my game interface.

What do G2 users dislike about Cry Engine:

“As a level designer, there are not so many tools available for creating the white-boxing stage. However, it’s easy to create open levels. But it feels the lack of a tool such as the one from Unity called ProBuilder.”

– Cry Engine Review, Daniel G. 

4. Godot

What sold me on Godot was its ability to design and develop 2D or 3D multiplayer games compatible with various hardware devices and operating systems.

Also, Godot is free and available to everyone as it is an open-source platform. There are no hidden fees or subscriptions. Because it is open-source, you can access the source code and customize it.

Another thing that I benefitted from is the game studio’s user-friendliness and intuitiveness. I found the “node-based architecture” relatively easy and perfect for beginner game developers. It breaks your game into manageable pieces and provides visual templates, animations, or 3D modeling services to build appealing user interfaces.

I was also able to easily upload and download files without interruption. The system is lightweight and does not consume a lot of processing power or memory, so your files can run and execute smoothly after you take them to production. 

It also worked on pretty much any platform or device, such as Android, iOS, macOS, Linux, and Windows OS. And exporting games? It was straightforward. I was able to get my projects running on PC, mobile, or any new game console.

However, due to Godot’s novelty, I encountered glitches in some game development lifecycles. When I tried working on 3D graphics, I could say that it wasn’t Godot’s strong suit. The tools were fine, but they were not up to par with competitors Unity or Unreal.

When I tried designing 3D prototypes for VR games, I faced issues with 3D physics and game simulation. The physics in 3D felt a little off, too, and if you are going for hyper-realistic visuals, you might run into some limitations.

But, all that was said and done, I was overwhelmed by the sheer amount of support I received from the community members and fellow users. If you are driven to build community-driven initiatives, interact with like-minded people, and develop full-fledged games, Godot is the most suitable option.

What I dislike about Godot:

• I found the 3D graphics lacking more than other contenders like Unity or Unreal Engine.
• In case I got stuck at any design stage, I waited for long hours for customer resolution as the support teams weren’t dedicated. 

What do G2 users dislike about Godot:

“The available tutorials are outdated and can be confusing to follow when using the latest version of the program. There are many changes, and it requires checking the version of a tutorial.

– Godot Review, Roger Alexander E.

5. GameMaker

GameMaker offers holistic game development coverage and compatibility with multiple content formats and computing devices, which makes it easy to launch and publish new projects.

I was able to brainstorm and construct a user interface with an intuitive and latest drag-and-drop builder. If you are new to coding, like me, you don’t have to worry about learning complex programming languages right away. I could build simple 2D and 3D layouts without writing a single line of code, which gave me a huge confidence boost.

But as I got more comfortable, I started exploring the built-in scripting language, GameMaker (GML), which helped me customize my game and add more features.

To add, the user interface was responsive, clean, and crisp. I never got too overwhelmed by the million options or cluttered menus on the main interface.

Apart from the scripting and graphic options, it also provides a large-scale visual library and cutting-edge physics services to control the dynamic movements of avatars on screen. And let’s not forget the multiplayer support – such a cool feature if you want to collaborate with your friends and play games together.

Of course, no tool is perfect, and GameMaker has its quirks. There were a couple of inconsistencies and limitations. I figured that GameMaker is strictly for creating 2D games. If you dream of building expansive 3D realms, GameMaker isn’t the right choice for you.

Another thing that consumed a lot of my time was exporting game projects to different platforms. I struggled with maintaining the production pipelines; it required a lot of manual intervention. Also, these features are not free; you require an upfront subscription fee to use them.

Finally, even though the tutorials were exhaustive and resourceful, They didn’t give me the necessary answers. If you are an advanced or professional developer, you might have to rely on other documentation or research platforms to resolve your queries.

Overall, GameMaker is an apt and suitable tool for building professional designs, creative animations, and visually appealing layouts, but it does lack a little to provide holistic game coverage. 

What I dislike about GameMaker

• I didn’t find it effective for creating immersive 3D games or 3D worlds on a free plan.
• The programming manuals only had information regarding block or functional programming, whereas I needed assistance with text programming.

What do G2 users dislike about GameMaker?

“I think it is perfect for platform games, but if you want something more advanced, a more professional level, there are other software options that might serve you better.”

– GameMaker Review, Diorling M.

6. Haxeflixel

In my opinion, Haxeflixel is a lifesaver. I can design, customize, and manage several game projects from one single codebase.

Be it a platform 2D game or designing additional characters in an existing game, Haxeflixel provides code customization options and full access to a source editor to tweak and pivot the game projects as you need.  

The tools feel like magic for game devs – creating graphics, new design levels, and a singular codebase that reduces the scope of any confusion or irritation. Its game engine was incredibly efficient and helped me maintain my focus on game development rather than getting lost in a sea of features.

Another feature that deserves a mention is the cross-platform support. With Haxeflixel, I can write and publish game code and launch it on multiple platforms. I have launched games on various operating systems like Windows OS, macOS, Linux, and so on without facing any file breakage or system crashes. It also offered flash support, which was amazing as none of the previous game engines offered it.

I also want to mention the scripting and programming support of the tool, which helped me put together my studio projects with ease. If you also juggle multiple platforms and tools, don’t even bat an eyelid and go for Haxeflixel.

Now, let’s talk about the downsides. First, the documentation was a bit unclear and not to the point. It wasn’t relevant, and I’ve had moments where I was left scratching my head while sitting in the middle of a backend glitch. 

Googling was another pet peeve that I faced, as I had to Google every single detail regarding game options or design issues. 

Debugging was another weak spot. While it is possible to debug, the process isn’t as intuitive or robust as I’d like. When I was working on complex projects, it felt a little clunky to keep on toggling between debugging and releasing the code while working with multiple languages.

Lastly, the community for this game engine is kind of small so there aren’t a lot of content materials available to resolve your frequent queries. I feel if you want to take a shot at developing a new 2D game without getting into the nuances of programming, Haxeflixel is the best choice out there.

What I dislike about Haxeflixel

• As a noncoder, I struggled to understand the high-level programming concepts needed to fine-tune my gaming backend.
• I wasn’t able to get much assistance from the documentation and knowledge base that was provided by Haxeflixel

What do G2 users dislike about Haxeflixel?

“Sometimes the documentation feels like it’s not very clear, and I’m left scratching my head. And hey, while it’s great for 2D games, diving into 3D territory? Not so much.

Oh, and let’s talk about updates. Sometimes, they can throw a curveball and break stuff that used to work like a charm. Also, the community, while awesome, can be a bit quiet at times, so getting help might take a little patience.”

– Haxeflixel Review, Harshit G.

7. Cocos2D-X

If you are a mobile fanatic and want to capture the attention of mobile gamers,  Cocos2D-X provides the entire tool stack for mobile game programming.

First, it provides support for multiple platforms and multiplayer. Whether I am building a new gaming ecosystem for Android, iOS, or any other mobile OS system, Cocos2D-X provides all configuration options.

As it is open source, beginners and intermediate developers can use it easily. It is free to use and lightweight, and it offers digital content inventories, playback support, animation and transition, and digital UI stimulation all in one place.

Further, I am appreciative of the developer community, which helped me find necessary solutions to my problems. As someone who likes diving into the gritty of code, I was amazed at this platform’s flexibility and agility.

What I also noticed is that the learning curve wasn’t too steep if I stuck to the basics and kept my focus intact. There were plenty of user-friendly tutorials for beginners that could easily get you started on your gaming journey.

But there were a few misses. The first was cross-platform support. While you can create mobile games, it doesn’t quite support desktop game programming. I felt like even the documentation was incomplete and sometimes confused me when I was trying to learn about advanced features.

I also found that the user interface was pretty basic and not up to the same quality as that of other competitors like Unity, Cry Engine, or Unreal. I missed the streamlined experience and holistic coverage that they offered.

Another thing I noticed was the lack of pre-built assets and visual tools. If I were expecting a rich asset library or an integrated visual editor, I’d be disappointed. Most of the coding relied on external tools and third-party integrations, which slowed the development process.

Another pet peeve I had was debugging. While I could easily debug my code on the previous platforms, I spent a lot of time troubleshooting and debugging my code on this platform.

What I dislike about Cocos2D-X:

• While the user community is large, I couldn’t get the exact resolution to my API connection issue with the onboarding documentation.
• While the user interface was clean, it wasn’t elaborate and immersive like other platforms, which cluttered my experience a bit.

What do G2 users dislike about Cocos2D-X:

“Many split-up codebases and frameworks make it confusing to get started and difficult to find good tutorials. Documentation is lacking, and information on the internet is a scattershot compared to other engines. This makes it especially hard for beginners.” 

– Cocos2D-X Review, Fatir A 

Best game engine: frequently asked questions (FAQs)

What is the best game engine for AAA development?

: Unreal engine is the top choice for developing AAA video games as it offers photorealistic graphics, advanced tools like Lumen and Nanite, and large project support. Unity is also a suitable contender for AAA development as it is known widely for its flexibility, customization, and platform robustability.

What is the best game engine for 3D games?

Unreal engine is widely considered the best game engine to develop 3D, AR, VR, or mixed reality games as it offers cutting-edge rendering tools, a production pipeline, and graphical visualizations that can empower you to build immersive 3D gaming environments.

What is the best 3D game engine for free?

Unreal Engine is the best open-source engine for creating 3D games with cutting-edge graphics. You can get started and deploy advanced features at no upfront cost, and royalties only apply after you cross $1M in revenue. Godot Engine is another excellent free option, offering end-to-end UI and UX services for smaller 3D projects.   

Does the game engine support cross-platform deployment?

Yes, game engines do support multiple platforms and offer cross-platform deployment. However, the efficiency of these game engines and production pipelines may vary, and they may perform differently on different computing devices and hardware platforms.

What technical documentation does the game engine provide for debugging and troubleshooting?

Game engines usually provide comprehensive documentation, active forums, and direct technical support to resolve any immediate or recurring issues that game developers face at any stage of the game lifecycle.

How scalable is a game engine for different project sizes, from indie to AAA titles?

Game engines often offer vast scalability and agility to handle multiple game projects, like indie or AAA projects. Further, it also depends on what subscription or license you purchase and the number of customizable features included within those plans.

Channel your fast and furious spirits and master gaming

While I resorted to distinct projections and goals before starting game development, developers have far more things to worry about in their daily course of work. Investing in a new game engine is a thoughtful and calculated decision that requires your teams to have complete knowledge and expertise in the gaming market. As I designed these apps for my own personal evaluation and analysis, I would always advise dev teams to consider all options, take advice from leadership teams, and evaluate the return on investment to make your software shortlisting process seamless and effective. 

Considering the pointers and analysis I shared, take the best call, scour all the other options available in the market, and get your hands on the best game engine to operationalize and automate your game development process. Feel free to come to this list if you ever feel stuck!

Ditch the barriers of hardware and software constraints for game creation and explore the best gaming tools in 2025 to build an agile and robust gaming architecture to improve your standing in the market.