Halloween!.zip is a release file of the Minecraft map Halloween!, made for Minecraft 1.8.8. It was published on October 31, 2015 and is 3.2 MB in size. For the full description, screenshots and every other version, visit the Halloween! map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.
