A drawing of 169 hexagonal pixels that are all "within" 7 pixels of a central pixel. Cities: Skylines map enthusiast BonBonB has speculated on YouTube that the upcoming Cities: Skylines II will use hexagonal tiles, based on some elements of the logo and trailer for the new game, and a YouTube user with the handle Yryum Yruud mentioned this as a possible shape of the playing area. I've been experimenting with possible shapes for the Cities: Skylines II playing area with hexagonal tiles ever since.