4D Cityscape got its start by offering puzzles that introduced a 4th dimension (time). You build the base jigsaw puzzle, which is an older version of a city. Then you add 3D elements, which brings it through time. When the puzzle is complete, you'll have a modern-day version of that puzzle.
As 4D Cityscape grew through the years, they added 3D puzzles of licensed brands such as Game of Thrones, Marvel, DC, Wizarding World of Harry Potter, and more.