Romelu Lukaku and Eden Hazard scored two goals each in a dominant Belgium display, leading their team over Tunisia 5-2 in the highest scoring game of the World Cup.
The Red Devils were rampant at times and rested both forwards in the second half for tougher tests ahead. A spot in the round of 16 is almost certain after an opening 3-0 win over Panama.
Belgium had a two-goal lead within 16 minutes. Hazard scored with a sixth-minute penalty kick he earned by being tripped, and Lukaku angled a low, left-foot shot into the corner of the opposing goal.
The Tunisians cut the lead when defender Dylan Bronn headed in a goal in the 18th minute, but Belgium wasn't done.
Lukaku clipped a right-foot shot over advancing goalkeeper Farouk Ben Mustapha to match Cristiano Ronaldo with four goals as the tournament's top scorers. Hazard then ran on to a long pass in the 51st, flicked the ball around Ben Mustapha and shot into an empty net. Substitute Michy Batshuayi made it a rout in stoppage time, and failed with three other good scoring chances.
Tunisia captain Wahbi Khazri got his team's second with almost the last kick of the match.
Belgium has shown the most complete attacking force at the World Cup, though without yet playing a European or South American team.
Against England on Friday, Belgium will be favoured to advance as the winner of Group H.