Extremely fun game, even more so if you like stealth + technical gameplay. The Mass Effect style speech + consequence to action, combined with an Assassin's Creed stealth style, and even a bit of Halo if you like to just shoot everything in the face. All of this is present in Deus Ex: Human Revolution.
The fact that everything is gold is cool too. Adds to the futuristic feel, and takes setting out of the ordinary.