I have an idea for a map and that is to use the maps of Rapture
I have several suggestions to go along with it
1. Bathespheres for transport
2. regions : Medical Pavilion, Arcadia, Fort Frolic, Olympus Heights, Hepestus, Welcoming station, and neptunes bounty.
MP=+3
WS=+1
Arc=+4
FF=+4
OH=+5
NB=+3
Htus=+7
