I am teaching game development, and would like my students to upload their homework assignments to a place in which I and the other students can easily see them, so that I can comment on them along the way. Itch.io seems like a good option, since it allows anyone to upload games and make them immediately playable in the browser. However, there are several potential problems:
The homework assignments are not games yet - they are only solutions to specific programming exercises, that some day may become games. Here is an example from my own account. Is it allowed to upload such material to itch.io? I read their terms of service and did not find any clause against it, but I am not sure.
Even if it is allowed, I am not sure it is good for the students' reputation to upload such half-made games. Ideally, it should be possible to create, for each game, a URL that is not published in the itch.io website, but can be opened by anyone that has the URL. Youtube.com has such an option. But I did not find this option in itch.io. I found only three options: Draft - which is available only to the owner, Restricted - which allows only download (not play in browser), and Public - which is available to all but can also be found in searches in itch.io.
So my question is: is there a way to use itch.io (or another similar service) for uploading rough drafts of games, such that the drafts will be available to the teacher and to other students in the course, but will not be published to the entire world?