I'm loving unity, the terrain editor inside the engine is amazing flexible and you can do alot with, can do any terrain. I personally think the interface is greatly organised, its almost as simple as realm crafter

I'm trying to think of a problem with it, I haven't come up with any yet. I don't advise it for a beginner at all, as great as it is, you need some good knowledge in computers in general or you'll get lost, also for others you have to be willing to read the tutorials which are super handy.
I was thinking of one day reading the platform game tutorials, but not for a while.
Also it seems majority of the forum projects was for making apps, guess its an faster way to make money. Though I though the adddon to make apps was a bit too pricy for me, maybe in a year or two I'll get it.
Best Engine I've ever used, I've been in and out deep on maybe 2/3 of the engine