This is great. Thank you for sharing it!
A couple of feedback points (which you may already be aware of):
1. I did occasionally find that not enough info was shown for papers to determine if they were really in my areas of interest, so perhaps it's worth a look to see how to show a bit more (my work around was to view the abstract but that kind of defeats to point!)
2. The ability to keep playing whilst you search further pages is cool. However I noticed if you search for a topic that returns lots of papers and you go on to a later page (eg you've navigated to page 4 for example) if you then search for different papers that return fewer hits you are shown a blank page, not necessary because there are no hits but because they don't populate four pages (in the example that I'm on page 4). I'd expect most people would want to return to the start of the results with each search
If you end up in the above situation, you can jump back to populated pages but it's not what you'd typically expect as a user.
3. The abstracts often have "\n" sequences present as actual characters in the text, which don't match up with the actual line breaks - presumably they're left over from the source but it looks like they ought to be stripped out.