Train Simulator Google Maps Api Key

I don t have an old api key so if i want to enable the google maps overlay i have to get a new one. I looked up the following resource for instructions on how to get google maps to work in ts2015. Now when you request an api key you have to select from four different types of keys recalling from the top of my head those types were server website android and ios.

destinations by train from nyc edinburgh train map pdf google maps birmingham train station detailed train map of scotland east london train line map google maps kyoto train station gatwick train station to london victoria google maps japan train