FC Inter was one of three clubs from Poland that had teams playing during Gothia Cup 2015. They participated with one team in Boys 13. In addition to FC Inter, 143 other teams from 31 different countries played in Boys 13. They were divided into 36 different groups, whereof FC Inter could be found in Group 33 together with SK Sprint-Jeløy 1, Nyköpings BIS 1 and Skoftebyns IF. FC Inter continued to Play off B after reaching 3:rd place in Group 33. In the playoff they made it to 1/8 Final, but lost it against Landora, BK with 1-2. In the Final, JK Tabasalu won over A.S. México and became the winner of Play off B in Boys 13. FC Inter comes from Warsawa which lies approximately 830 km from Göteborg, where Gothia Cup takes place.