It is vacation in most of the countries. Maybe for that purpose the campaign length might have been shortened for the immediate launch of the new dice game. FortuneJack already have good trust, so it'll easily reach more number of gamblers in a short time.
Exactly, this was also comes up in my mind.
It's a hanging question why the campaign only take 4 days and why not 1 week.
Signature campaign is really effective marketing as what you can see, there is company like FJ who willing to publish and rund campaign even a short period of time.
With a huge number of participants, I think it is enough to spread and promoted the site even though it takes only 4 days in campaign. In fact, Fortunejack.com has been existed for a ling time and I know that gamblers had know its name already.
But much better if the company will run the campaign for a long period of time to drive a better result.