Hey Guys,
C# was already ported to 4.4 of UE with full API and debugging support, MonoDevelop IDE support, multi-platform support (iOS, Android, Win, OSX, PS4, XB1 etc), as a plugin. It had full access Unreal’s API via the build system (just like Unreal.js). It was pulled from github because of licensing issues towards the release of 4.5. I’m currently in contact with from Xamarin, to help bring it back. Based on any discussions there, I will pull down the pre-4.5 branch of mono and look at the changes to core UE, perhaps get some PR requests to Epic to fix any integration issues and then hopefully get it back up to speed with branch as a plugin. This is all contingent on getting my hands on the mono-ue source and time availability(I do have a day job :))
Tommy.