When comparing AppGameKit 2.0 vs Unity, the Slant community recommends Unity for most people. In the question“What are the best game engines for Python?” Unity is ranked 5th while AppGameKit 2.0 is ranked 9th. The most important reason people chose Unity is:
Unity is bolstered by a huge, helpful community via its official [forums](http://forum.unity3d.com/), [wiki](http://wiki.unity3d.com/index.php/Main_Page), [Unity Answers](http://answers.unity3d.com/), and [Unity Asset Store](http://www.assetstore.unity3d.com/); plus the most-subscribed [subreddit](reddit.com/r/unity3d) of any game engine.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro HTML5 support
The AppGameKit Basic can now export to HTML5.
Pro Cross platform
Supports developing games for Android, iOS, PC, Mac, Linux and now HTML5.
Pro You only need to to pay for the license only
There is no charge for upgrades, or for extra platforms (the HTML5 version just appeared in the latest version), there are no subscription fees or other usage charges. If you publish onto either Apple or Google's stores you will have to pay their costs, of course, but the makers of AGK do not take a cut of this themselves.
Pro Plugin support for Windows
Plug-ins can now be added to the Windows platform. Create your own Tier BASIC commands and call them using the AppGameKit Basic script language style.
Pro Instant testing on multiple devices at once
AppGameKit supports instant testing on all connected devices. With the push of a button you can run your game on any device connected to the development machine.
Pro Excellent documentation
Every function is fully documented with examples and exercises. The Tutorial PDF is a full Introduction to 3D game programming with integrated references to every functionality and its most important usecases. The documentation is regulary updated.
Pro Easy basic programming
Program in tier 1 BASIC programming for every 3D game need.
Pro Raspberry Pi free version available
A Raspberry Pi version is available and free. Users just need to register with the developer and then they can download.
Pro Very fast compilation
It is a compilation based language, but the compilation is very fast. A project of about 1800 lines of code, for example, can compile almost instantly. (That's because it does not compile, it's an interpreter)
Pro Support
Informed, timely and intelligent feedback from the AGK forum.
Pro Fast development
There are plenty of functions which facilitate development and deployment. For example, the AGK player immediately plays the updated bytecode on Android devices then the online site helps with building an APK file for Google Play Store in minutes.
Pro Uses a powerful scripting language built for game development
Software produced with the App Game Kit is written in a language called AGK Script. This language has powerful inbuild commands including commands for 2D graphics, physics and networking. The commands make use of the platforms' native functions to improve performance. They are also designed to enhance code readability. The AGK Script commands have extensive online documentation.
Pro C++ and Basic, you have the choice.
It runs fast with BASIC but if you want more you can use C++, it's also easy to use.
Pro Can be used for advanced games programming in C++
Libraries which provide the same functionality are available for the five platforms, so you can code in C++
Pro Comes with an Integrated Development Environment (IDE)
AGK comes with an Integrated Development Environment (IDE) based on the Code::Blocks IDE for writing AGK scripts. A key feature of the IDE is its ability to broadcast compiled programs to other devices for testing.
Pro Performance

Pro Great community support
Unity is bolstered by a huge, helpful community via its official forums, wiki, Unity Answers, and Unity Asset Store; plus the most-subscribed subreddit of any game engine.
Pro OUYA support
Pro Over 20 platforms
Unity offers over 20 platforms for publishing including mobile, console, web, VR, and more.
Pro Versatile
Not tailored for specific types of games (like Unreal...), so it won't get in your way if you want to make something unique.
Pro Well structured
Overall, a coherent engine with a rational approach. People who complain a lot about being forced to hack around it usually do not read the docs, like the one that describes orders of execution, or specific functions hooks and such. Some like to say it lacks raw power where people who are used to standard optimizations have no problem. For example It is not uncommon to encounter users who complain about low FPS but forgot to activate occlusion, flag static elements, activate animations culling, and so on. As for complaints about C#, people who are transitioning from C++ were already bad at C++ before being bad at C#. They often come from the PC world where the sheer power of today's machines is very forgiving compared to the platforms we had to develop for in the 80s~90s. One of their errors is for example to never read this doc.
Pro Very optimized
Unity runs very smoothly even on systems that are considered "weak" by today's standards.
Pro Lots of assets can be found in the Asset Store
For those developers who can't afford an artist, or aren't skilled enough to create their own art, Unity features an Asset Store full of a wide variety of free and paid assets that can be easily added to a game. The Asset Store has more than just music and art. It also has code and modules that can be added to games including unique lighting or GUI systems. It also has powerful asset management and attribute inspection.
Pro Works with 3rd party IDEs
You can use any C# IDE for it, but the ones tested which have Unity integration are:
- Microsoft Visual Studio
- MonoDevelop
- Visual Studio Code (much faster than VS, but a bit harder to set up for Unity development)
- JetBrains Rider (very fast, has lots of functionality and best Unity integration, but it is not free)
Pro Flexibility is provided by a strong component programming model
Pro Has a great animation system
Unity provides a great state machine animation system called Mechanim allowing to separate animation from the model and assign the same animoations to different models.
Pro Powerful standard shaders
The built in standard shader in Unity 5 is incredibly optimized and supports PBS/PBR.
Pro Allows for rapid prototyping
Unity's modular system and usability allows for quickly developing a prototype of an idea. It has features like drag & drop editing, shaders, animation and other systems already in place to allow diving right into developing a game.
Pro Easy learning curve
The way the editor is structured, by setting scripts on objects, and the use of a high-level language, C#, makes it easy to learn.
Pro Can create custom forms and tools
Pro Very popular
Unity is a proven game engine. It is used by a wide range of developers - from small indies to triple-A companies such as Microsoft, Paradox, Square Enix and Sega.
Pro Lots of resources to learn from
Unity3D provides an exhaustive documentation where everything is given a full description supplied by a number of examples as well as video and text tutorials and live training sessions to understand the ins and outs of the engine. In addition there's an ever-growing community that can offer advice to help resolve any situations that may arise.
Along with the official Unity resources, there are many high quality (and often free) third party tutorials available.
Pro Great editor
The editor GUI is very powerful and intuitive. It allows pausing gameplay and manipulating the scene at any time as well as progress gameplay frame by frame. It also has powerful asset management and attribute inspection.
This allows it to be more powerful than other, simpler drag-and-drop engines such as Game Maker Studio, although it can take a bit more experience to learn the workflow.
Pro As of Unity 5 all engine features are free for everyone
As long as the company makes $100k or less, Unity's free version can be used to release games without purchasing the pro version.
Pro Supports 2D and 3D
With Unity knowledge of just one engine is needed to be able to create both 2D and 3D games.
Pro Great community
Great Community support through Forums and Unity Answers.
Pro Provides access to a huge list of assets through Asset Store
There's an Asset Store, providing free and paid assets (including components). It also has powerful asset management and attribute inspection.
Cons
Con Restrictive virtual buttons
"AppGameKit" does not grant editing the very basic parameters of virtual buttons such as font and text size. The only method some people suggest is to use an image for every single "button".
Con Terrible scripting language
MS Basic from the 70's has more features. Procedural, no OO, inheritance, basic user defined types with overloading. Nothing. It even has GOSUB.
Con BASIC language
Even though it supports C++, it's mostly C++ mapped to BASIC without OOP.
Con Can almost only do trivial games
The editor is rather limited, not fully polished, and 3D is missing some key functionalities (3D is work in progress).
Con No builtin game mechanics, events, inventory.
Con $80 even if your game doesn't fly
Con Editor code completion is pretty bad
Con Pros on Slant are written by AGK marketing guys

Con No native editor for Linux
Though it builds for Linux, the Unity Editor runs only on Windows and Mac. Some users have successfully run the Windows version on Linux via Wine.
