There is a 3rd party Unity 3D plugin called Playmaker, which is really super easy to use, and allows you to more easily connect up parts of code without having to learn how to actually code in Javascript or C#.
Its the closest things i think you'll get to a 3D construct 2.
It costs money however for the plugin, and sometimes goes on sale. But its worth every penny.
Start with watching some of the beginner tutorials on their youtube channel to see how easy it is to use.
youtube.com/user/HutongGamesLLC