My students just made some games in 2.0 . Now we want to share the files with each other but keep it private. However, we want to open them in 1.4. Is that possible? If not, can they share using a link on the website. We do not want to publish the files to the whole community for privacy reasons. Thank you!

You can't go from 2 back to 1.4 You could use the download on the file menu to download a project to a shared drive and then have students upload the file again on the file menu.

In 2.0, click file > download to your computer, and save it to a flash drive, and import the projects into 2.0 from the flash drive on a different computer. Or if the computers share a network you could share the files with each computer without the flash drive