All this talk about Thief made me want to revisit the series, so I decided to install Thief 3: Deadly Shadows. I last played this several years ago, but it wasn't on a system that could fully max it out in terms of visuals and audio. This time, I'm using my overpowered i5 + GTX 970 WinXP rig with an X-Fi Titanium Fatal1ty sound card. That way, I can play Thief 3 at 1600x1200 with 8xSGSSAA and 16xAF forced via Nvidia Profile Inspector (the former needs compatibility flag 0x00000041). Even with all that, I still get a locked 60 FPS, and GPU utilization remains around 40-50% most of the time, briefly spiking to 86% during the most demanding scenes with lots of transparency effects. This is per MSI Afterburner.
Additionally, having EAX 4.0 active on an X-Fi Titanium hooked up to 5.1 surround speakers is a real treat. Turning on all of the relevant in-game sound settings is a bit of a chore, since the options menu uses that huge font which only shows like three lines per page. I almost forgot that the EAX stuff was all the way at the bottom of that unintuitive screen. Once turned on, the EAX 4.0 implementation in this game is truly spectacular, and you can experience some crazy stuff like footstep sounds realistically propagating through open windows and so on. There's an article on Creative's old website which describes this in more detail. Suffice to say, the developers really outdid themselves with the sound design, and it's a great fit for a stealth game.
In terms of gameplay, Thief 3 plays a bit differently from its predecessors. First, it was clearly designed with the third-person view in mind (e.g. like Splinter Cell), which is what I'm using. The weird head bobbing mechanics that are present in first-person mode make me nauseous, so I'd rather not deal with that. Second, the levels are notably smaller than in the previous two games, probably due to the memory constraints of the original Xbox. This is similar to Deus Ex: Invisible War, in that the maps are split into several chunks, but the loading screens aren't quite as frequent here.
The new engine does bring some cool enhancements though. Features such as dynamic lighting are used to great effect here. For example, some guards now carry a torch in their hand, which illuminates nearby shadows as they move around, making it harder the player to hide. Also, if you knock out one of those guards, they may occasionally fall onto their torch and get burned to death, if you're not careful. The game does suffer from the mid 2000s "rubber people" physics jank, which can lead to some unintentional hilarity. The UI is also very different from the previous games, and the console influence can be clearly felt. I wish the PC version at least supported Xbox 360 controllers, but alas, it does not. From what I gather, the lock picking minigame is a lot more fun when using a controller with rumble support.
Anyway, I'm just getting started, having only finished the tutorial and the first level. The latter is kinda reminiscent of the first mansion in the original Thief, which brings back some good memories. I almost forgot that you're free to roam around the city after each mission here, so I guess I'll be doing that next.