Swarm by B. V. Larson

This is a real scifi with aliens, robots, spaceships and laser guns. Time after time it is refreshing to listen to an audiobook without overcomplicated concepts. The story goes around an old concept: aliens attack the Earth to pirate its raw materials. Other aliens send help, so the humanity has a chance to defend itself. But then comes a spin: the help arrives in a form of automated ships, which pick up their command personnel by their own. In the process selecting the suitable candidates they kill the unsuitable ones without hesitation.

After losing his children, it takes time for the hero to come to the conclusion that these ships are not evil, but simply follow an algorithm. Nothing is black and white, as it is the case in real life.

I enjoyed the story, which develops from ships killing people to war with giant robots. And of course, there are nanorobots, which injected into people make them superhuman.

If you want a "shoot the alien robots" type of story, this one will entertain you.