I think someone with enough ingenuity could extend [OpenFL](http://www.openfl.org/ http://www.openfl.org/) to create such a transpiler. An OpenFL HTML5 app is

I think someone with enough ingenuity could extend [OpenFL](http://www.openfl.org/ http://www.openfl.org/) to create such a transpiler. An OpenFL HTML5 app is already capable of rendering SWF animations, but it doesn't currently support the internal actionscript. With access to the games' original source they could be ported to OpenFL pretty easily (it uses Haxe, a language similar to actionscript that can transpile to many other language targets), but that's a bit short of automatic runtime transpilation of SWF content.