I don't have an issue with the animation itself (I actually think it's rather nice), just that it could be sped up a bit.
Also I use Godot. I started with Unity a few months ago, but there were just too many issues with the engine for me to do more than follow basic tutorials. Meanwhile, within a week of switching to Godot I was able to submit something for a game jam (it wasn't remotely good, but it was something unique that didn't follow a tutorial).
If you wanted to switch, you could probably try porting Molegan's Quest to Godot, the only thing I'm not sure how to do would be the hyperlinks but I'm certain it's possible.
Just note (and I'm not completely sure about this), the version of Godot that offers C# support can't export to HTML yet. They're working on it and it should be available for 4.2, but in the meantime gdscript is very similar to Python and rather easy to learn.