Best languages or tools to create a Word Mobile Game?

• Best language and tools which i used for game development is java scripting in Unity and objective-c in cocos2d.
• Now you can develop game in swift language with SCENE KIT.
• Here is a list of gaming engine some are free and some are not.

• Cocos2D
• Unreal Engine 4.
• Unreal Engine 3 (UDK)
• CryEngine V.
• Unity 3D.
• Source Engine/Source SDK.
• Source 2.
• Leadwerks.
• Torque3D.

c# and and unity 3D is a best tool for designing word mobile games and javascript is best  to creat scrips for designing..

Swift programming language is good to develop word game.

If it's a simple game you can use Flash builder and port it to iOS and Android systems,if it's a complex game, you can use native gaming tool in iOS and android :iOS : Cocos-2d is the best solution also: native gaming kit from Apple ,SpriteKitAndroid: Android Game Kit is a good solution Also, you can use cross-platform game kit like Marmalade SDK (C++).

only Unity is best tool for game development because its very easy for new developers but if you are a core developer then try some tools that use that language which are closest to OS just like corona game engine or like assembly language and use some artificial intelligence tactics to make game awesome.  

unrealengine and corona-sdk and yoyogames .

Using SpriteKit is the best way for game development using swift language. It is powerful and fully supported by Apple.

unity 3d using c# and you can build pc , android , ios app 

The best language to create a Word Mobile Game is Java script.

It's good idea to use unity 3D it's very easy to use , there is a lot of documentation and also a lot of  tutorial on youtube. I have created this Game in 6 days.It's easy to generate android and ios app.

You can check this forum for more informations about licence. 

https://answers.unity.com/questions/7720/is-unity-really-free-.html

Unity is the best option in my opinion. I have been working on unity and it is the best engine for the game development.