(As long as you aren't using the flash player 10.1 pre-release beta, in which case it will simply crash)

Got the nape engine compiled to a .swc now also, which can seamlessly be linked to a flex/flash project for use in any AS3 project now too!

And of course, the engine it's self performs exactly the same as though you were working in haXe, so for those of you who love AS3 too much to transfer to haXe (Though i suggest you should! it's way better and compiles much faster code) you can use my engine too, which performs far better than any other AS3 engine out there i've tested.

Nape Project Page