Belgium will not crack in their opening World Cup game with Algeria, said coach Marc Wilmots on Monday, insisting that real pressure is felt not by footballers but by the seriously ill in hospital.

Wilmots, who had a distinguished playing career appearing at four World Cup finals, added that the tag of dark horses for the title had stemmed from the foreign press and was not one he would attach to his largely young, vibrant side.

"Pressure? What pressure? Pressure is for example when a child is seriously ill in hospital," said the 45-year-old, who has been in charge of the national side only since 2012.

"This is football: I see nothing but sheer enjoyment from the players here. In just two years we have come an incredibly long way. Now the players are going to do everything they can so they do not go home with regrets.

"In 2002, I left my last World Cup without feeling any regrets (they were beaten by eventual champions Brazil in the last 16) but with pride having been daring and combative.

"I want it to be the same way this time round. We are small but we will fight with all the weapons we have."

Wilmots, who entered politics after he retired as a player and was elected to the Belgian Senate in 2003 for the liberal-leaning Mouvement Reformateur before resigning in 2005, said that the foreign media were perhaps overestimating their chances.

"The foreign press has on occasions labelled us as such (as outsiders for the title) which is very kind of them but I must remind everyone that while we have come a long way we had a lot of ground to make up.

"It has been 12 years without nothing (referring to the gap between major finals). So favourites or outsiders matters not a jot to us. We will carry on our path that we have planned and play our matches with the same philosophy that we want to get better and we will see where that leads us."

Wilmots, who was affectionately nicknamed in his playing days as 'War Pig', said that he wasn't concerned by the Algerians' reputation for being extremely physical.

"A lot of teams have adopted a muscular approach in the games so far," said Wilmots, scorer of 28 goals in his 70 internationals.

"So that aspect doesn't exactly strike fear into me. The players will give their all. I am more worried about the individual skills of the Algerians who are capable of beating their opposite numbers in one-on-one situations."

Wilmots, who was rewarded with a new contract before the finals that takes him up to 2016, said he had instructed his players to not go out with all guns blazing.

"A lot of matches are decided in the final 20 minutes, it is why I told the players not to rush things, to stay calm, be patient. As regards the match I have drawn up different scenarios from A to C."

After the Algeria game the Belgians will go on to play Russia and then South Korea.