A computer case is the enclosure that contains most of the components of a computer. Through the 1990s, most computer cases had simple rectangular shapes, and were often painted beige or white with little attention given to visual design. Technology blazes forward and many hardware enthusiasts love to design and create unique cases for their computers. It takes sharp focus, skill and perseverance to build what others can just dream of. Case modding is the artistic styling of computer cases, often to draw attention to the use of advanced or unusual components. Since the early 2000s, some cases have included clear side panels or acrylic windows so that users can look inside while it is operating. Modded cases may also include internal lighting, custom paint, or liquid cooling systems. Some hobbyists build custom cases from raw materials like aluminum, steel, Styrofoam, acrylic, or wood. Here are the top 20 most creative PC case mod designs that exemplify genius.