I just wish Unity had the same license with source code access ^^

Spend too much time in Unity now to relearn everything again. And for some reason I dislike the UDK Editor, feels like a Radiant on steroids... without being able to step away from this 3D FPS stuff or being able to script something easily in e.g. C# (Game AND Editor).

Nice coincidence, just checked Unity website and version 5 is out http://unity3d.com/get-unity