When comparing Torque 2D MIT vs uScript + Unity3D, the Slant community recommends Torque 2D MIT for most people. In the question“What are the best 2D game engines?” Torque 2D MIT is ranked 4th while uScript + Unity3D is ranked 97th. The most important reason people chose Torque 2D MIT is:
Torque 2D gives developers complete access to the source code. This removes all barriers one may hit when trying to extend and/or customize the engine they are working with.
Specs
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Pros
Pro Extremely extendable and customizable
Torque 2D gives developers complete access to the source code. This removes all barriers one may hit when trying to extend and/or customize the engine they are working with.
Pro Cross platform
Torque 2D runs on Windows, OS X, iOS, Android, Linux, and Web.
Pro The scripting language is quite powerful
Torquescript is a fast and easy to use C++ like scripting language that ties all of the various elements of a project together. It supports a large complement of functions including math, physics, object manipulation, fileIO, and more. Torquescript features:
- Object-oriented programming
- Transparent interconnection with internal C++ objects
- Built-in fast 2D math (vectors, matrices, and quaternions with all corresponding functions)
- Well-documented standard library (hundreds of functions out-of-the box)
- Component system (aka Behaviors)
- Dynamic asset and module loading
Pro Highly performant
The engine utilizes a combination of batched rendering, asset management, and a module system that allows for high frame rates on all platforms.
Pro Box2D physics
Torque 2D MIT's utilizes Box2D for all physics calculations. Anyone with prior knowledge with Box2D by itself or through other engines can easily transfer their knowledge. Nearly all of the Box2D API is exposed to the scripting language, making it a quick process to port games to the engine without having to learn an entirely new system.

Pro Automatically generates nodes for third-party script assets
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.

Pro Versatile flow diagram script model
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.

Pro Generates C# source code
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.
Cons
Con Project seems to be abandoned
Seems to not be developed/supported anymore.
Con Lacking documentation
The engine documentation is incomplete. Not all of the engine API is fleshed out and the number of tutorials is pretty small. All current and future documentation effort is up to the community, via the Torque 2D MIT GitHub wiki.
Con Rentware

Con Not that easy to use
It's a lot more complicated compared to something like Playmaker. Same tasks take a lot more time.
