I did modeling in 3ds max and level design,i can not code at all,and i need a light ,easy and free engine with enough features so i would not need a programmer from the start ( to modify the engine to the game needs - lets say a simple physics based 3d side scrolling platformer.
However i would try other tricks as possible when ever i can avoid scripting.
Which would be the easiest of these three engines as they are now..
If you know an easier than these that is also free ,let me know.
There is gameplay which looks to me clean and trusty and supports platforms like android etc but i doubt it has editors yet and that is light enough for me to use.
So next choice would be maratis which says can work on mobile also.
and there is cafu
I will check more the docs of these engines to see what they can do out of the box ,but would like a second opinion.