The challenge us to find out more about her story by paying attention to the clips and working out what to search for next and how to narrow down the results. It's not a traditional game but there are ways of measuring your success/progress if you feel so inclined. Spoiler There are certain clips that you have to watch before it decides you've uncovered enough of the story to get the "ending". After that, you can continue to try and unlock the remaining clips and find out even more, or you can choose to end it there. You can see how many clips you've watched and where they fit in the timeline using the database checker on the desktop. I found it really captured me and I ended up playing with a notepad to jot down lists of key words that I thought would be good to search for.