You can launch applets via jnlp as well.
That is very cool! Java is so flexible!!!
Having said that, the whole reason I wanted to make it an Applet, was so people could just visit the web page and play the game straight away. No d/ling of a JNLP file, doesn't add anything to your installed programs list (in Windows based PCs), no window pop-up, etc...
And having said that, if a JNLP file makes it easier for Appel, then I'll go with the flow.