Update: I've drafted up some more code for SimpleCard which has a unique feature I like to call WebPlay.
Rather than downloading the game, you direct the runtime to a URL which contains all the game data, so if you need to update certain parts of the game, you can just change it and re-upload so the gamers won't have to download a newer version. I think it's pretty neat, and it should work too...
I should hopefully have a fully usable editor and runtime by next Monday, so keep your eyes peeled.