Even if your game is designed for web there's a way to package it. Hell, websites are packages hosted on servers, they're not floating in the ether.
One reason I see that would make a webgame hard to package is if your game contains an excess of absolute paths which is not recommended since you have no control over them and any change on the source website could break your game, unless those source websites belong to you. But if your paths are all relative, and you have the files with the images and other media, the packaging should be really straight forward.
its a social media website which is built around a turn based strategy game. its dependent on database usage.
There isn't a way to download game, because I haven't set up a way to download the game and I admit, I wouldn't know how to do that, as not looked into doing so due to there being no need for it, as its a web game you play on your browser.
*edit* >>I would presume you use a program like Unity to do it.
its a fully designed "website" with a "game" built in , therefore no download.
something I have already posted in this thread,
Basically quicker answer here is, there is no download option , as there is no download option been setup, I thought that was obvious from my very first reply to HiEv, guess not.