Society Summer Party 1991 was held in Kajaani, Finland by Society for the Amiga scene. Party reports conflict on this, but some say around 220 people showed up, others say more than 250. There was a big sound setup and a bigscreen for the competitions. In addition to the normal competitions, there were also compos for the games Kick-Off and Stunt-Car Racer. Sponsors were Broadline Oy, Commodore, Elektro Design Ltd Oy, Karelia Computer Ky and Man & Man Co.

Competition rules specified the competition machine to be an A500 with 0.5mb fast ram. No ripped content was allowed. There was no voting at the party; winners were decided by the organizers. First prize in the demo competition was 3000 FIM and a hard drive.

In addition to the invitation intro, there was also an extensive bit of text in Secret Experiment inviting to the event.

Results and info based on material from http://byterapers.scene.org.