For fantasy, I might make mention of Tunnels & Trolls' City of Terrors solo adventure, by Michael Stackpole.
Its not good (actually the opposite of that; its trash) but it may be mineable for ideas because the actual problem with it is that you can't cross the street without stumbling across a implausible plotline, and/or a Wandering Person encounter.
Flying buffalo did a series of 'Citybooks' as well, but I don't know anything much about them.