Olympic champions Denmark romped past Egypt 35-28 in Group D after the Africans had started their tournament brightly beating Qatar on Friday.
Casper Mortensen and Lasse Svan Hansen scored five and six times respectively in the first-half giving the Danes a 21-15 lead by the break and 12 of their 14 outfield players had scored by full time.
Spain and Croatia both had a tighter time of it.
The Iberians were leading Tunisia by just two points with ten minutes to go in their Group B game but thanks to David Balaguer's three late goals they eventually prevailed 26-21.
The Spaniards now have four points and are level with Slovenia, who edged Iceland 26-25.
Hungary were missing their star player Laszlo Nagy with an ankle injury but still ran Croatia close over the first 45 minutes before a late flurry gave the Croats a 31-28 win, leaving them sole leaders of Group C ahead of Chile and Germany.
In Group A, Norway also had a second win beating Russia 28-24 after their 22-year-old 'keeper Torbjorn Bergerud actually scored and with 14 saves won the man of the match award.
The hosts and defending champions France had pulverised Brazil in their opener with a one-sided 31-16 win, but the Latin Americans redeemed themselves Saturday with a win over Poland, who will now struggle to qualify for the next round.
Macedonia beat Angola 31-22 in Group B and look well set to make the cut for the latter stages of the tournament.