Congo with their first ever World Cup goal!
I think performances from a lot of these smaller teams justifies the expansion to 48 teams. Gives more teams chances to showcase their talents and put them on the map too. Even Curacao, despite the 7-1 loss to a great Germany team still managed to score a goal against them and were 1-1 for a while before Germany unleashed. Now people know about Curacao as well. Obviously Cabo Verde made a name for themselves too big time.