When comparing jMonkey3 vs RPG Toolkit, the Slant community recommends jMonkey3 for most people. In the question“What are the best 100% free and easy game engines for beginners?” jMonkey3 is ranked 26th while RPG Toolkit is ranked 40th. The most important reason people chose jMonkey3 is:
Java is a well-optimized just-in-time compiled language. It's faster than languages without an effective native-code compiler such as Python or Ruby, similar in speed to other just-in-time compiled languages such as C#, while slightly slower than compiled languages such as C or C++ (with some low-level and numeric [benchmarks](http://benchmarksgame.alioth.debian.org/u64q/java.html) being similar to C++). Java also has a wide variety of high-class IDEs available.
Ranked in these QuestionsQuestion Ranking
Pro Java is a great development platform
Java is a well-optimized just-in-time compiled language. It's faster than languages without an effective native-code compiler such as Python or Ruby, similar in speed to other just-in-time compiled languages such as C#, while slightly slower than compiled languages such as C or C++ (with some low-level and numeric benchmarks being similar to C++).
Java also has a wide variety of high-class IDEs available.
Pro Multiplatform support
Code can be ported to mobile (iOS is in the works) and other Android supported devices with minor changes to the code (just change some implementations that vary on the platform such as inputs and user interface). It can even run on certain Raspberry Pi devices.
Pro Free and open-source
jMonkey is completely free, meaning it's possible to develop and release a game with no fees or royalties. Because it is open-source, jMonkey has plenty of people fixing bugs and, adding to the engine as well as creating a variety of plugins that can be used in the engine.
Pro Not limited to using its own IDE
Unlike some engines, jMonkey doesn't force its own IDE. You can use its Netbeans-based IDE, but you can also set up a project to work in another IDE such as Eclipse. You can still use the special tools from jMonkey's IDE in such projects.
Pro Engine modifications can be made using Java
Because jMonkey is implemented in Java, the same language its apps are typically developed in, developers will have an easier time modifying the engine to their needs.
Pro Has everything
jMonkey3 handles input from computers and mobile devices. It handles networking, physics, rendering, terrain, and cinematics.
Pro Ease of extensibility
Engine is modifiable.
Pro Freedom of choice for architecture
The user is not compelled to use any programming architecture nor standard in order to make a project working. JME allows the freedom to use what is best for a game.
Pro Offers both low-level and high-level ways of editing shaders
Modifying shaders can be done either via a visual tool called Shader Nodes or via GLSL that allow you to make your own shaders without the engine getting in the way or having to hack around to do so.
Pro Object oriented scripting language
The scripting language RPG Code allows you to create robust games that don’t have to be an RPG.
Pro Tile Based Lighting
Want to create cool scenes complete with light sources? This engine give tile based lighting to enhance the mood for your RPG epic!
Pro Supports Plugins
Want to expand upon the editor without having to recompile it? RPG Toolkit allows for plugins to create the tools you need.
Pro Comes with it’s own code editor
Many times engines with their own scripting language make you stay in a less than helpful text editor. RPG Toolkit comes with it’s own editor along with code completion.
Pro Database of objects
Quickly change stats, graphics, and properties of every game object in your game.
Pro Orthographic and Isometric tiles supported
Straight on or at an angle? It’s up to you with the RPG Toolkit!
Pro Vector based collisions and pathfinding
Create vectors right in the scene to define NPC paths, colliders, and program triggers.
Pro Built in tutorial
Find out all of the features of RPG Toolkit from within the Toolkit itself! Giving you a guided tour to produce a simple scene to get moving with your own development.
Pro Free and Opensource
Get the freedom you want with the BSD and GNU license so you can touch every single aspect of this engine.
Con Not an engine for total beginners
While it's clear that you need to know Java first before using this engine, it is recommended that you have some programming experience as well. Most performance issues and memory leaks are more due to bad programming practices than the engine itself.
Con Terrible API reference
The methods are not defined.
Con Slow release cycle
jMonkey3 lacks manpower to have a fast and decent release cycle.
Con Relies on archaic tool chain
jMonkey Engine uses Apache Ant for build automation, which is archaic and backwards, even by Java standards.
Con Default menu/fighting systems cause build errors
If you open up a new game and check the checkbox that copies the default assets it will create an error due to the default Battle System. You will have to create your own Battle System to get around this.
Con Windows only
There are so many devices and operating systems out there now that it doesn’t make sense to only support windows anymore.
Con Cumbersome workflow
Often the window you need is buried in another window which does not completely make sense. A UX update is definitely needed with this engine.
Make sure to save often since things can be a bit buggy.