If nothing else, the setting of Arcanum is ambitious and unique. I'd say that this quality alone made Arcanum less accessible than Fallout; its setting was too obscure, occupying too specific of a niche. People are familiar enough with post-apocalyptic speculation to know where to compartmentalize that in their fiction spectrum. It would be uncommon enough for somebody to recognize steampunk, let alone high-fantasy steampunk. I'd say the setting was fleshed out well enough. The industrial revolution challenging the magickal establishment made for a fitting backdrop to advance the dwarf versus elf plot. This setting was not only a convenient plot device, but also allowed for the game mechanics to highlight the dichotomy of Magick and Technology.