libGDX vs uScript + Unity3D

Lots of references, tutorials and open source code to learn from.

While it may not always have the best performance for a particular device or system, it's one of the few engines which consistently performs very well across different platforms.

scene2d is a 2D scene graph, scene2d.ui is a UI toolkit on top of that. It enables very complex mobile and desktop UIs.

Since it's built with Java and runs on the JVM, any language that compiles to Java bytecode can be used to develop games with libGDX.

A Java port of the Box2D physics engine is included in libGDX.

LibGDX supports both 2D and 3D game development. Allowing developers to migrate from 2D to 3D with ease without having to switch the engine they are using or having to learn a new API.

Unlike some engines, which only allow you to make your game in a few specific ways, libGDX allows you to design any type of game you wish as it is extremely customisable.

The libGDX community, in the official libGDX forum is extremely helpful and approachable for any kind of question regardless of the its quality or difficulty.

The forums themselves are a very helpful resource for any issue or guide simply by searching past posts in there.

In addition to the forums, there's also the official #libgdx IRC channel on Freenode.

Sometimes it is necessary to access platform specific APIs, e.g., adding advertisement services or leaderboard functionality provided by frameworks.

libGDX uses the Apache License 2.0.

Not only is libGDX free and open source but also it's license gives you a lot of power over the engine. As long as you provide a copy of the license, give credit, do not hold devs liable and do not use libGDX logo in any engine forks you can do pretty much anything you want.

It is written in Java so you can easily make games using Kotlin and Ktx project will help you get all advantages of this language.

LibGDX itself is pretty mature, and get updates not quite frequently, but various libraries for it are actively updated.

You can write once and run anywhere (Android, IOS, Desktop, Browser) also lately came with lib to deal with VR.

libGDX has built in support for many 3rd party tools, including (but not limited to) Bullet Physics, Box2DLights and the well-praised Tiled Map Editor.

Even though the official documentation might be lacking, there are many tutorials on YouTube for libGDX.

Very good tools for rendering fonts.

Old XNA users may like libGDX since it's API is actually very similar to XNA's.

Unlike Unity or other engine, it allows to optimize a language that uses garbage collector when using patterns of objects you can control the use of memory without needing a language like C / C ++, getting the same speed in a more productive language.

uScript's nodes are a visual representation of actual code blocks, and it takes advantage of C#'s reflection capabilities to automatically create nodes for any scripts it finds in your project, regardless of the source. This makes it inherently compatible with pretty much everything.

Custom nodes can also be created by hand, for cases where the automatically created ones contain more elements than they actually need.

Modeled after UDK's Kismet (the predecessor to UE4's Blueprint), uScript's scripts resemble flowcharts where each box represents a function or value, with connections between them representing program flow. This provides a better at-a-glance indication of game logic than a simple list of events, and makes complex behaviors easier to accomplish.

Nodes are translated directly to C# files in your project. This is great for learning to code, and also for advanced users who can use uScript for fast prototyping and then further optimize the scripts if necessary.