Smooth Criminal
Da Cheef
I dunno enough about the Deus Ex universe to proclaim it a "perfect prequel," but I can definitely vouch for the "great experience" part. I'm loving the game so far. The gameplay is solid, and I LOVE (read: ****ING ADORE) the cover system. It is so unbelievably intuitive. I got into a a couple of gunfights at the beginning of the game (I tried sneaking!Deus Ex: HR is nearly a perfect prequel. I am really not that far in, I don't think, but it's just such a great experience.
Most of my time was spent talking to every single NPC and looking for eBooks, though. It's a rare thing for me to be this interested in a video game's setting; I think it's something about the presentation, and the pacing of the overall story, that's plugging me right in. I really hope it keeps this up.
Smooth Criminal