Snapshot 15w44a is an alpha file of the Minecraft resource pack Dj's 16x Mariocraft, made for Minecraft 1.9-Snapshot. It was published on October 29, 2015 and is 0.1 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 Dj's 16x Mariocraft resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.