The This by Adam Roberts

Bear Head by Adrian Tchaikovsky

Rule 34 by Charlie Stross

Bardo it Not Bardo by Antoine Voladine

The Happier Dead by Ivo Stourton

Foe by Ian Reid (it's like the chiral version of the film, which I also liked)

Under The Skin by Michel Faber (the book is terrifying)

I've kept it short and relatively contemporary because there's likely an overlap with lots of other people and I've usually read lots of that author. So I've avoided obvious or the popular sci-fi classics but have often read or attempted them.