[Solvency]

What's the gotcha here for why it isn't better known? I've used Processing, Unity, Godot, hell I even played with Ember C++.

Never heard of this til now. Any major drawbacks or limitations?

[wavemode]

When I was using it (a long time ago) I considered it pretty solid, as far as game development goes (though you're not going to find a ton of libraries outside of that niche).

The only thing I remember disliking was that, it has a lot of backends (it can compile to Python, PHP, Lua, Java... lots of things) and some of them are well-maintained whereas some are barely used and rather buggy.

[liveoneggs]

Papers Please (The game) was written in haxe