You are a solar craft. The sun is your death timer. Hurtle towards the sunset at breakneck speed in a futile race against time. Delay the inevitable by catching energy boosts which reverse the setting sun - if only for a moment.
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.