Les Bleus have been impressive so far, winning all four matches, scoring 13 goals and conceding two. Captain Kylian Mbappe, Ousmane Dembele and Barcola have netted 12 of them.
"I enjoy immensely playing like that," Barcola told a press conference. "We pass, attack and defend together. These are great players and that is why it works so well. It is a joy to play together."
They eased into the last 16 with a confidence-boosting 3-0 victory over Sweden on Tuesday, while the South Americans stunned four-times champions Germany 4-3 on penalties.
"We know it will be complicated," Barcola said of Paraguay's deep defending. "We have to find alternatives and we will do that. I hope it keeps working well for us until the end."
Temperatures on Saturday in Philadelphia are expected to top 36 degrees Celsius but Barcola said that while it would drain them a bit more, the team had got used to the warm weather during the weeks-long tournament in North America.