In addition to Gunnilse IS, 190 other teams from 33 different countries played in Boys 16. They were divided into 47 different groups, whereof Gunnilse IS could be found in Group 25 together with Roanoke Star Premier, Karlslunds IF HFK and Nordhordland BK. Gunnilse IS continued to Play off B after reaching 3:rd place in Group 25. In the playoff they made it to 1/64 Final, but lost it against Estudiantes de Rio Cuarto with 0-4. In the Final, IFK Lidingö FK won over GAIS and became the winner of Play off B in Boys 16. Gunnilse IS also participated in Boys 15 during Gothia Cup 2013. They reached the 1/8 Final in B15 Play off A, but lost it against ACBB Paris 1 with 0-1.