Viewers have until September 15 to view six online "webisodes" of the "Ultimate Adventure Challenge," Hyatt Resorts' series featuring the adventures of five U.S. families as they compete in activities in different destinations, and vote for their favorite family, thereby entering themselves into the contest to win 50 free nights at any Hyatt worldwide. The contest and series were created to recognize the rise in adventure travel and highlight Hyatt's adventurous offerings. "We aimed to engage families on vacation and encourage them to experience the unique destination-specific activities at each property," said Scott Seed, director of resort marketing. The winner will be announced September 28. Visit [www.hyattadventurechallendge.com].