A strong contender for the most intuitive IDE is the Unreal X-Editor. While the editor has come a long way since its initial release, it's still in its infancy, as the tool is less than one year old at the time of this writing.
Unreal X-Editor offers a number of features that makes it stand out, including the following:
Head over to http://unrealxeditor.wordpress.com/ to download the latest version of Unreal X-Editor. Setting up the IDE is pretty straightforward as well, so no explanation is needed here.
Once you have it installed, ...