Mario! Release 2 is a release file of the Minecraft resource pack Mario's World, made for Minecraft 1.8-Snapshot, 1.7.10, 1.8. It was published on November 1, 2014 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Mario's World resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.