I used it a few years later for some work with Nickelodeon. Somewhere in a backup I have some Spongebob games and a version of Pai Sho.

Haxe was never great, but it was a bit more efficient and productive than using the GWT-based PlayN (formerly Fourplay). The language itself was just not quite right and felt like a harder version of Java or JavaScript.

It's not really a problem anymore, but compiling to ActuonScript used to be pretty buggy. Now that Flash is long dead, it's possible that the cross-compilation problems might be lessened.

They also may have added some additional features making it less painful, but I'm not convinced.