{{LarpInfobox larp run|image=Ob71.jpg|dateimage_alt=2002A portrait of two men in 1970's suits.|locationcaption= VarbergCarl Heath and Per Wetterstrand, Swedenorganizers of OB7.|countrylocation=Varberg, Sweden
|full_creditsdesigners=Designed by {{plainlist|*[[Carl Heath]] and * [[Per Wetterstrand]].}}|participation_fee={{currency|900|SEK 900}}|game_mechanicstechniques=Several{{plainlist|* [[The Doctor]]* [[Pre-larp workshop]]}}
}}
'''OB7''' Was was a larp set in the context a prison during political turmoil in Sweden in 1973. The Swedish Security Police "(Swedish: ''Säpo" '') arrested people belonging to various leftist organisations and kept them in prison for interrogation on the suspicion of terrorist activities. The game was designed to explore gameplay in isolation. ==Controversy==OB7 was controversial when produced as it explored themes from the classical Stanford Prison Experiment [http://en.wikipedia.org/wiki/Stanford_prison_experiment]. It was a [[political larp]] which brought to light political controversies of the 1970s as well as then-current issues. OB7 was written in the wake of 9/11 and the European Union summit in Göteborg 2001.