I reworked the maps from the Solo games (BS1/BS2) and even incorporated maps from the Multiplayer and other DLC (because they were often larger detailed areas than the original level representations) into them The revised maps include areas behind those blocked doors, utility areas never seen, additional elements like transportation which any real City simply could not work without. In some cases the original maps had flaws that were physically impossible, and were corrected. Some original maps were even incomplete, and so were corrected to show missing parts of the real game levels.