you should to add the indiexpo's games. they are all free (and there is a feed rss to use)
https://www.indiexpo.net/feed/all.xml
this is the page with the feed rss https://www.indiexpo.net/feed?locale=en
https://www.indiexpo.net/feed/all.xml
this is the page with the feed rss https://www.indiexpo.net/feed?locale=en