In addition to Karlslunds IF HFK, 115 other teams from 30 different countries played in Boys 18. They were divided into 28 different groups, whereof Karlslunds IF HFK could be found in Group 14 together with IL LEIK, Space/Ordin, TSV Friesen Hänigsen and IK Oddevold. Karlslunds IF HFK continued to Play off A after reaching 1:st place in Group 14. In the playoff they made it to 1/8 Final, but lost it against GAIS with 1-3. In the Final, BK Häcken won over Lärje Angered IF and became the winner of Play off A in Boys 18. Karlslunds IF HFK also participated in Boys 18 during Gothia Cup 2013. They reached the 1/8 Final in B18 Play off A, but lost it against Bradfield College with 1-5.