Past weeks' winners compete in the final round.
Past winners compete in a third semifinal round.
Past winners compete in a second semifinal round.
Past winners compete in a semifinal round.
Teams from Oklahoma, Scotland and New Zealand participate in an oversized bowling-alley.
Burly Russians in their four-ton Siberian Monster machine are more than ready for contact games.
Giant bowling-match; Hall of Mirrors; Sumo arena.
Teams play oversized 10 pins, bumper cars and 'Wetropolis.'
American, British and South African teams play 'Ten Pin,' 'Pitball,' 'Wetropolis' and 'Sumo.'
Gargantuan bowling match; hall-of-mirrors maze; roller-coaster track.
Teams from South Carolina, Australia and Britain play 'Ten Pin,' 'Pitball,' 'Wetropolis' and 'Sumo.'
Teams from California, India and the United Kingdom build unique vehicles.
Team machines compete as huge bowling balls, bumper cars and roller-coaster cars.