The 3D OpenStreetMap World of New York

CubicPower appear to be creating a 3d Doom type game world from OpenStreetMap data. CubicPower's New York Maze map is a series of thousands of small block size 3d maps of New York locations, which you can explore using your keyboard. The CubicPower website doesn't appear to have any information about these 3d maps. They appear to be made with a WebGL powered 3d engine, with OpenStreetMap map