Marstrands IBK was one of 64 clubs from Sweden that had teams playing during Göteborg Cup Innebandy 2018. They participated with three teams in Pojkar 10 (07), Herrar (A-licens) and Damer (A-licens) respectively. The team in Damer (A-licens) made it to the the 1/4 Final in Slutspel, but lost it against Pixbo Wallenstam IBF by 2-3.

In addition to this, Marstrands IBK have participated in Göteborg Cup Innebandy before. During Göteborg Cup Innebandy 2017, Marstrands IBK had 4 teams playing in Pojkar 10 (2006), Pojkar 15 (2001), Herrar and Damer respectively. Two teams played until 1/4 Final in Slutspel; Herrar lost against IBF Älvstranden by 2-4 and Damer lost against Tvåstad KIK by 0-2.

Marstrands IBK comes from Kungälv which lies approximately 21 km from Göteborg, where Göteborg Cup Innebandy takes place. The area around Kungälv does also provide 24 additional clubs participating during Göteborg Cup Innebandy 2018 (Among others: Kärra IBK, Pixbo Wallenstam IBF, Floda IBK Göteborg, Partille IBS, Lindome IBK, IK Zenith, Floda IBK, IBF Göteborg, FBC Lerum and Stenungsunds IBK).