Interesting, thanks for sharing! I spent a few minutes playing around with it and it, it seems to target a different niche from Flash. You can't make games with it, only animations for games you'd make in something else.

There's no brush or pencil tool, only a very bezier-oriented Pen tool. You're supposed to take the results and integrate them into your game/app using one of their various cross-platform integration libraries. So you'd still have to use something else to make the game, this would just help you make animations (and maybe art, if you like bezier curves).

Still, in an era of "render your vector art to bitmaps and dump them in Unity" it's nice to see a tool that does realtime rendering of vector-art animation :)

It doesn't seem like it would be too hard to use this to make a HTML5 game (they provide a wasm module for playback of assets) but it's definitely a ways off from a fully integrated solution (and they don't currently seem interested in that aspect).