While I really like the original Thief, the second installment of the series is just all around better. The core mechanics stay the same, the equipment has been bolstered by a few new, niffy gadgets but the biggest improvement, are the missions. The first Thief had some 'regular thieving' ones but the majority revolved around traversing supernatural environments and dealing with supernatural threats. The second one delivers on what I, personally, wanted from the first one: breaking into mansions, infiltrating cathedrals, running through rooftops or picketing people at night, while skulking through the city streets. A great stealth game - I highly recommend this classic.
