I really enjoyed “XX” by Rian Hughes — a completely new kind of sci fi. Like my other fav sci-fi book Three Body Problem, it all starts with a signal from space, but then... very boldly imagined book and deserves much more praise than it seems to have gotten. Amazon.com: XX (9781419750694): Hughes, Rian: Books https://www.amazon.com/dp/1419750690
Also recommended in this reply