Latics take on Premier League leaders Chelsea at Stamford Bridge in their final game knowing they could deny their hosts the title by avoiding defeat.
Having already secured their top-flight status for a sixth successive season, it is a match that would appear to have little riding on it for Wigan.
Yet Martinez has assured Manchester United - who need a favour from Wigan to pip Chelsea to the title - that his team have plenty to play for.
The Spaniard said: "For me as a footballer you play for the memories and memories come by winning medals and by achieving things.
"For our football club to perform well when the whole football world is watching is going to give us special memories and that is what you play football for.
"Our season is finished but Sunday is something more special than that.
"Everyone expects Chelsea to turn up and win the match.
"It is more than a football game for us because we know the whole football world is watching and for the youngsters they could learn more in 90 minutes than they could for two or three years."
Martinez will tell his players to play without fear and feels they are capable of turning the home side's party sour.
"There are no expectations on us," he said.
"Everyone expects Chelsea to win and so for us we are going to be together, we need to be really close and help each other and perform.
"We are capable of going to Stamford Bridge and making things difficult."
Chelsea are a point ahead of United with a game to play.