I also like visual programming, and got ~1000 hours of experience in RPG Maker. But it's limited to just, RPGs... And that is where this awesome piece of software comes in. I only discovered it like a few days ago, and am still learning the basics, but I'm already in love with it. It's free and open-source, clean and clear UI, straightforward and easy to learn, and the tutorials are really easy to follow and detailed.
I think this software has got a huge lot of potential, and deserves way more attention. I'm curious to see how it develops further.
I hope to get a decent understanding on how the software exactly works, and am able to create something awesome with it.