Comparison of commonly used Game Eninges (Ogre3D, C4, Unreal Engine, Unity3D)

Ogre3D C4 Unreal Engine 4 Unity3D
Installation + - + +
Documentation o/+ o/+ + +
Performance o ++ o +
Kinect Effort + - - +
Language C++ C++ C++ C++/C#/Javascript
World Editor - + + +
Mainloop Access + - - -
OpneNI + + - +

A more detailed description of the comparison

Ogre3D

C4 Engine

Unreal Engine 4

Unity3D