Minecraft wiki entry for Saved_data_Dropbox_guide, associated text: Once installed, move your Minecraft folder (located in ~/Library/Application Support/) to a folder in your Dropbox. Rightclick on this new folder and choose Make symbolic link. This will create a symbolic link in the same folder. Move this back to your Minecraft folder's original destination (make sure it has the same name as the original) and you are all set to pull your game data off the internet.