Right now you can only play games that I’ve pre-compiled for the interpreter, so if you have something you absolutely want to see in the library feel free to suggest it. Later I’ll add a feature to upload your own story files or pull them from the Internet. Also note that save games aren’t persistent yet, i.e. they’ll disappear when you close the page.
In addition I’ve made a tool to extract data from Hugo .hex story files. It’s at http://nitku.net/if/hugo/hexparser/. It can show things like the dictionary, grammar, objects and lots of other things, basically everything that’s stored in the story files. Useful for Hugo techies and when you’re stuck in a game and want a “hint”. It works with games compiled with Hugo version 3.1 (the latest), but the interpreter works with all versions.