The Queen's Hope Diamond has been stolen! It's up to you to search for clues throughout 22 levels, find the offending culprit, and recover the stolen gem. Expand your investigations through the game's 29 unique locations by finding items that will unlock subsequent levels.
Most popular community and official game content for the past week.  (?)
What does popular mean?
It means the content you're seeing has been rated up more than it has been rated down for the given time period.