HapYak is a flexible and extensible platform for creating different types of interactive videos. There are 3 core types of interactive videos. (note you may still see the older "Playlists" feature in your group. That is being deprecated in favor of the Branching experience.)
A HapYak Project is a single video with HapYak annotations. This is the most frequently used video type.
A HapYak Template is one set of saved annotations designed to be added many videos.
A HapYak Experience is a Project combined with other elements (like synced slides or an e-commerce cart) outside the video player that dynamically interact with player.