When comparing Crafty.js vs Cocos2d-x and Cocos Creator, the Slant community recommends Cocos2d-x and Cocos Creator for most people. In the question“What are the best 2D game engines?” Cocos2d-x and Cocos Creator is ranked 8th while Crafty.js is ranked 47th. The most important reason people chose Cocos2d-x and Cocos Creator is:
25% of iPhone games are made using Cocos2d-x. This means you will not be alone in development, and will have access to a large community. You'll know you are developing for an engine that works.
Ranked in these QuestionsQuestion Ranking
Easy to learn, based on Entities and Components, the later being class-like objects that entities inherit.
Has open function binding systems, allowing easy creation of custom components.
Pro A proven engine for mobile development
25% of iPhone games are made using Cocos2d-x.
This means you will not be alone in development, and will have access to a large community. You'll know you are developing for an engine that works.
Pro OpenGL hardware acceleration
Pro Supports 3D models with skeleton animation
A new feature since Cocos2d-x v3.1 is support for 3D models (in your 2D game), not only this but support for skeleton animations is included too! This awesome feature allows for impressive characters in your game along with easier, more fluid and realistic animations.
Pro Great script language support
Especially with Cocos2d-JS you can develop games cross web and native, and the native solution have great performance with JS Bindings, much better than hybrid solution.
Pro Highly active community for questions and support
Cocos2d-x forums are active.
Pro No external dependencies
Because it is based on Pyglet.
Cocos2d-x is not only open source but also supported by Chukong Technologies of China and USA.
Regularly updated and adding support for the latest technologies. 2014 has already seen the release of Version 3, a new Cocos Studio development toolkit (optional) and support for new technologies like skeleton animation systems Spine and Adobe DragonBone.
Pro One code for all platforms
On top of supporting pretty much all existing platforms (except consoles), Cocos Creator (Cocos's IDE) allows you to write 1 code that runs on Android, iOS, Windows, MacOS and HTML5 (not Linux though).
Pro Greater performance than high level APIs
Cocos2d-x is C++ based engine and it has CPU advantages for most platforms because of that. It uses polygonal mesh methods for sprite rendering for using GPU advantages. (You also use quad methods for benefit CPU).
Pro Easy integration of 3rd party plugins
For example, if you want to add a rating plugin, you use
sdkbox::PluginReview::init(); and if you want to add the Vundle Ad Network SDK, you use the one packaged in SDKBox
Pro Allows for easy debugging
It has a built-in Python interpreter that allows for easy debugging.
Pro Very good IDE
Cocos Creator (Cocos' IDE) comes with scene editing, UI editor, animations & particle editors and whatnot. It's also easy to use and pretty intuitive if you read the official documentation & tutorials. Way way better than the old CocoStudio.
Pro Great video tutorials
Hundreds of video tutorials available.
Con No IDE
If you like having some huge GUI akin to Gamemaker, Unreal, Unity, etc, Crafty is not for you.
Con Poor support and non-existent community
Up until 2013, this was one of the best engines around. However, since then it was bought by a Chinese company and began stagnating - it's virtually in a slow death. Most developers abandoned Cocos in favor of more modern solutions leaving the community weak and the forums with little or no traffic. Although the Cocos2d-x Forum seems to have a decent community going.
Con Modest functionality
Almost all free alternatives are more convenient, faster, and more functional.