Hey! I'm using that to write a game right now!

It's just a hobby game, I doubt I'll do anything other than open-source it, but it's been fun. I don't have any experience with other engines, but this one has been great to learn on. The GDScript isn't too hard to figure out, but their documentation can be a bit lacking at times. It feels really polished for an OS project.

I haven't used any other engines so I don't have any experience, but I would still recommend this for a beginner.