With Brazil's opening-night win over Croatia still the talk of Twitter, those getting ready to play in the next few days' games are getting psyched up to represent their nations
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A Marcelo own-goal saw the hosts go behind early on, only for Neymar and Oscar to make amends and set the Selecao rolling - but the referee's performance was the subject of much debate in the aftermath.
Yuichi Nishimura awarded Brazil a penalty for a foul on Fred when there appeared to be minimal contact and the Croatians were also unhappy when they had a goal ruled out for a push by Ivica Olic on goalkeeper Julio Cesar.
With Friday bringing the first full schedule of games, including a repeat of the 2010 final when Spain face the Netherlands, the other 30 nations now settle into the mood ahead of their first matches - with the likes of Mexico, Chile and United States particularly vocal on social media.
|THE MORNING AFTER... Brazil v Croatia is the hot topic
Thank you God for everything and the Brazilian fans for all the support! This goal was for my wife and my daughter! pic.twitter.com/eUWD13Aplj— Oscar (@oscar11) June 13, 2014
Penalty or no penalty for Brazil?— Brad Davis (@Brad_Davis11) June 13, 2014
|READY TO GO... Mexico dare to dream
|GEAR UP... Bosnia and USA can't wait
We give our maximum for the World Cup..Hajmo Bosno !!— Emir Spahić (@emir_spahic) June 13, 2014
|ENJOY THE VIEW... Costa Rica settle in at Fortaleza
Q bonito llegar al hotel y sentir el apoyo de los ticos en Fortaleza !! pic.twitter.com/GksqXKrXlW— Christian Bolaños (@BOLACRIS7) June 13, 2014