The second round of group matches is well under way and we've seen plenty of action.
We've also seen plenty of mistakes.
So, which ones are the worst? In no particular order, here are eight of the biggest mistakes.
Ri Myong Guk didn't cover his near post, even taking a step away from it in anticipation of a cross from Maicon.
Maicon's cross/shot curved between Guk and the near post and helped Brazil on their way to a morale boosting victory.
Guk was so embarrassed that he is said to have apologised to Kim Jom-Il.
Nigeria were 1-0 up and going along well.
Then as Kaita chased a ball out of play he had a bit of a tussle with a Greek player and tried to rake the Greece man with his studs.
He didn't properly connect, but it was enough for a distraught Kaita to be sent on his way.
Nigeria were pushed onto the back foot and conceded two goals to lose to Greece, who'd never scored at the World Cup before.
After Dimichelis failed to control a simple header, Lee Chung-Yong capitalised by scoring a simple goal.
Luckily for him, the goal didn't prevent Argentina cruising to a 4-1 win.
Dimichelis must make sure he doesn't make a similar mistake against more threatening opposition later in the tournament.
The South African goalkeeper's trailing leg brought down Uruguayan striker Luiz Alberto Suarez in the box.
He was promptly sent off. The resulting penalty, with 10 minutes to go, put Uruguay 2-0 up and put to bed any chance South Africa had of snatching a draw.
South Africa's loss means they must now beat France in order to progress from their group, who knows what would've happened if it wasn't for that penalty...
This mistake was pretty big.
England were 1-0 up and hadn't looked too troubled by the USA.
Green's poor positioning gifted the USA an equaliser. They came out for the second half with more confidence than before and were able to hold England to a draw.
The mistake will have hurt Green's confidence and could cost Green his position as England's number one.
Serbia against Ghana was headed for a draw until Kuzmanovic missed a header and used his arm instead.
The resulting penalty gave Ghana the win and has seriously weakened Serbia's chances of progressing.
Luckily for him, Serbia managed to shock Germany and beat them 1-0.
Algeria and Slovenia were both given a chance to capitalize on England's draw with the USA.
In the second goalkeeping error in group C, Fawzi Chaouchi gave Slovenia a helping hand after completely misjudging a shot from Koren.
The resulting 1-0 win for Slovenia gave them the advantage in group C.
Algeria will have to upset England if they hope to progress.
Serbia centre back Namenja Vidic went for a superman dive but succeeded only in giving away a penalty.
Luckily for him, Germany missed the penalty and Serbia went on to claim a famous 1-0 victory.
No thanks to Vidic.