This is a basic leaflet map depicting the locations of all places that have appeared in Fallout games so far (minus 76 as I do not play it and cannot find existing data for it.) It works just like ...

var mapSync = new L.MapSync({ showOutline : true, //or false showShadowCursor: true //or false inclDisabled : false //When true shadow-cursor and outline (if enabled) are also shown on disabled maps ...

Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...