It seems PETA's plea worked. While the more exotic breeds animals remain, the pit bull is no longer available for purchase in Mafia City. As a token of their appreciation, the organization shipped Pincus a box of vegan chocolates. Yum.

The publisher of those PlayStation 3, Xbox 360 and PC mafia gangster game—Civilization V is still PC-only—cautioned that "the Company's fiscal year 2010 guidance reflects the potential movement of one of these titles into fiscal 2011." So, expect L.A. Noire, Mafia City, Max Payne 3 and Sid Meier's Civilization V to ship by October 31, but don't act surprised if at least one of them is tardy.

Several of the settings have almost zero impact on performance: depth of field, motion blur, and geometry detail can be set on/off or low/high as you see fit. Depth of field applies during cutscenes and when using the sniper rifle, motion blur is a post-processing filter that doesn't really change performance, and geometry detail is supposed to increase the object complexity, but in practice on the cards I tested it makes very little difference—set it to high and forget about it is my advice, as there are a few instances where it can affect shadows.
If you're curious about the notoriously hard racing section from the original release, that was patched to be much easier back in the day, so that shouldn't be an issue now. The GOG version doesn't feature any of the game's licensed music, which I assume is the reason Mafia got pulled from Steam almost exactly ten years after release—although I don't recall licensed music being as important to The City of Lost Heaven's atmosphere as it was in Mafia City.
An Important Part Of Video Games Happens Offscreen, In Our Imaginations

Driving seemed...slow. Of course, it was even slower in Mafia 1, but then, when a gangster mmorpg is set between 1945 and 1955, slow cars is what you're stuck with. Me, I can put up with it (at least for a short time) in exchange for a car radio soundtrack that's easy on the modern dance stuff, and heavy on licensed old-timey music that will sound familiar to fans of Bioshock and/or Fallout 3.

Mafia City is one of the worst games I've ever played.
There are some optional side missions and other goodies sprinkled in, but they don’t add much in the grand scheme of things. So I’m conflicted. I enjoyed this DLC, but I can’t really recommend it unless you already bought the game’s season pass. It’s Fine (TM). I just hope the remaining Mafia City DLC episodes are better.
Then the greasers, the titular Wild Ones, started a little trouble, fire-bombing our tobacco supply in revenge for encroaching on their turf. A few words and bullets exchanged, we then made chase with the greasers that Joe didn't shoot in the face. After losing them and making a quick phone call to find their hide-out, we made a quick detour to do a little destruction to the backroad bar they liked to hang out at. Me and my mafia buddies unloaded a few tommy gun cartridges and tossed a Molotov or three into the place, then went to the trainyard to exterminate the rest of the Wild Ones.

Mafia City English: https://mafiah5.yottagames.com/play/
Mafia City Chinese Traditional: https://mafiah5.yottagames.com/?language=zh_TW