They're over their funding goal, so it's trying to get through as many stretch goals as possible for the next 19 days.
From the campaign:
New York, 1929: A frenzy of interest in antiquity is sweeping the nation! With museums hungry for mysterious and exotic artifacts — and you hungry for adventure — you start up your own archeology company. Untold wonders await within dangerous jungles, harsh deserts, and wind-swept mountains. Will you gain a reputation as the most intrepid and famous adventurer of all time?