Finally, something I've read through! (I promise, folks, I do actually read things.) I love the Deus Ex franchise and have read both of the novels you see below. The first one, Icarus Effect, is a prequel to Deus Ex: Human Revolution and stars original characters. It is pretty good and really helps to set up the world that the games take place in. This novel was followed by a mobile game that was an honest to goodness full Deus Ex experience that continued the story of these characters. The game is supposedly quite good but when I tried it I could not grok the controls. The screen was so cluttered with buttons and icons and menus! The second novel, Black Light, stars Adam Jensen from the console games as well as some other familiar faces like Pritchard. Of the two it was the novel I enjoyed more, perhaps because of its intrinsic fanservice qualities, but they were both good. I don't know that I would recommend them to someone who was not a fan of the games (there are so many great science fiction novels that stand alone, after all) but if you enjoyed that world and are looking for more, by all means dive in.

The Dead Space series is another I greatly love but I have not read these books yet. Like the games, these are horror and well regarded. I'll get to them sometime.