From Looking Glass Studios:
This game transports you to a world of stealth, subterfuge, and mystery. Stalk through the silent corridors of a sleeping city and ambush its unsuspecting guards. Eavesdrop on your foes as they coordinate their manhunt in real-time digital audio. Infiltrate and explore mission areas, from sewers to an abandoned cathedral, even plundering the Lost City of the Ancients. Prowl in the shadows, scale sheer walls, leap over chasms, and dive beneath the rushing waters of the city's aqueducts.