CountryGamer_Core_1.1.1.zip is a release file of the Minecraft mod Origin, made for Minecraft 1.6.4. It was published on January 14, 2014 and is 0 MB in size. For the full description, screenshots and every other version, visit the Origin mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.