I have a new scifi novel out on Smashwords entitled Kyrathaba Rising.
170 years from now, aliens decimate Earth. A relative handful of humans survive, hidden in deep subterranean enclaves that offer some protection from surface radiation. Although the main attack is now seven years in the past, one alien ship remains in orbit, and the conquerors are not content merely to let humanity lick its wounds...
Here's the link:
https://www.smashwords.com/books/view/339398
Best of luck to all you authors!