TreSensa

What about images, do  you put them all in a single image with tiles?

Yes, sprite sheets for each animated object, but still multiple image files.

I think Kongregate loads HTML5 games into an iFrame, so you have to host the game yourself and provide a URL that can load an iFrame.

My guess is that http://uploads.ungro...ernate_329.zip/ is a path. The game was probably uploaded to the server as a zip file and unpacked by the server and placed into a directory with the same name as the zip file. Not sure that it is possible to distribute an HTML5 game as a single file since the game typically is written in javascript and requires a context in which to run.

At TreSensa, we distribute HTML5 games as a single HTML file (the entry point for the game and its javascript code) along with a CSS file and few javascript files. The javascript files are typically combined into a single javascript file to reduce the number of http requests. This is particularly important when loading the game on a mobile device. We also apply minification to the javascript files to compact them. Yuicompressor is a good tool for this. See http://developer.yahoo.com/yui/compressor/