Where and when?
The primary argument for Dublin 1904 is that Joyce crystallised it across countless dimensions, making the unpacking of his crystal into a game that never seems to grow stale.
1900 NYC in StreetView
How many novels take place in:
1920s Berlin Project community in Second Life
NYC Hotel Chelsea [SL?]
contemporary Lisbon, Portugal [2ndLife]
contemporary San Francisco [Cities: Skylines]
Luxembourg City in Second Life
GTA NYC, Miami; London 1969
videogames by country of setting: [wiki] [Ireland] (mostly sports)
Irish coast 1923
present-day Castle Malloy