Brazilian fan cheers before the start of a friendly football match against Serbia in preparation for FIFA World Cup Brazil 2014.

The 2014 FIFA World Cup gets underway Thursday in Brazil. The month-long tournament will crown a champion in men's football—or soccer as it's stubbornly called in the U.S.

Some 32 countries are participating, including a U.S. contingent. A total of 64 matches will be played in 12 cities across Brazil in new or refurbished stadiums. It's the second time Brazil is playing host, having done so in 1950.