Sky Jump Challenge [v1.0b].zip is a beta file of the Minecraft map Sky Jump Challenge, made for Minecraft 1.8. It was published on September 14, 2014 and is 0.6 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Sky Jump Challenge map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.