In addition to Stenungsund IBK, 35 other teams from 5 different countries played in Boys 16. They were divided into 9 different groups, whereof Stenungsund IBK could be found in Group 2 together with Åstorp/Kvidinge IBS 2, Snipers Bratislava and Ull/Kisa. Stenungsund IBK continued to Playoff A after reaching 2:nd place in Group 2. In the playoff they made it to 1/4 Final, but lost it against Hovslätts IK with 1-5. In the Final, Åstorp/Kvidinge IBS 2 won over Hovslätts IK and became the winner of Playoff A in Boys 16. Stenungsund IBK also participated in Boys 15 during Gothia Innebandy Cup 2013. They reached the 1/16 Final in B15 Playoff A, but lost it against Bygdö Monolitten IL with 1-3.