The Capitol.zip is a release file of the Minecraft map The Hunger Games: The Capitol, made for Minecraft 1.7.6, 1.8.7, 1.7.4, 1.7.7, 1.7.5, 1.8.4, 1.7.9, 1.8.8, 1.7.2, 1.8.3, 1.8.6, 1.7.8 and more. It was published on March 14, 2016 and is 2 MB in size. For the full description, screenshots and every other version, visit the The Hunger Games: The Capitol map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.